Don’t Panic: The comprehensive Ars Technica guide to the coronavirus [Updated 4/4] - Ars Technica, Ars Technica

[Updated, 4/4/2020] [Updated, 4/4/2020] [Updated, 4/4/2020] Stay calm –

This is a fast-moving epidemic — we’ll update this guide periodically.

Beth Mole

– Apr 4, (7:) (UTC UTC)

Don't Panic: The comprehensive Ars Aurich Lawson / Getty

Nearly 1.2 million people have been infected with a new coronavirus that has spread widely from its origin in China over the past few months. Nearly 88, have already died. Our comprehensive guide for understanding and navigating this global public health threat is below.

This is a rapidly developing epidemic, and we will update this guide periodically to keep you as prepared and informed as possible. March 8: (Initial publication of the document.) (Latest Updates 4/4) :

Updates have been added to the sections on deaths , how (transmission compares with flu [UPDATE 3/13/2020, 4/4/2020] , and (masks) . The global and US case counts have also been updated.
A list of all updates and additions to this document can be found at the end. Table of Contents

How worried should I be?

What is SARS-CoV-2?

(Where did SARS-CoV-2 come from? )

How did it start infecting people?

(What happens when you’re infected with SARS-CoV-2?

What are the symptoms?

(Does COVID -) cause a lost sense of smell? [New, 3/23/2020]

How severe is the infection?

Who is most at risk of getting critically ill and dying?

Are men more at risk?

Are children less at risk? [Updated 3/20/2020]

Are pregnant women at high risk? [New, 3/19/2020]

US data on risk for millennials [New, 3/20/2020]

⇒ How many people die from the infection? [UPDATED 4/4/2020]

How does COVID – 35 compare with seasonal flu in terms of symptoms and deaths?

How does SARS-CoV-2 spread? [Updated 3/12/2020]

⇒ How does coronavirus transmission compare with flu? [UPDATE 3/13/2020, 4/4/2020] [Updated, 3/16/2020]

How contagious is it? [New, 3/9/2020] [Updated, 3/16/2020]

Can I get SARS-CoV-2 from my pet? Can I give it to my pet? [New, 3/9/2020] [Updated, 3/16/2020]

If I get COVID – , will I then be immune, or could I get re-infected? [Updated, 3/20/2020] [Updated, 3/20/2020]

(How likely am I to get it in normal life?

What can I do to prevent spread and protect myself?

(Should I get a flu vaccine?)

⇒ When, if ever, should I buy or use a face mask? [UPDATE, 4/4/2020] [Updated, 3/16/2020]

Should I avoid large gatherings and travel? [Updated 3/13/2020] [Updated 3/13/2020]

(What precautions should I take if I do travel?

Do quarantines, isolations, and social-distancing measures work to contain the virus? [Updated 3/13/2020] [Updated, 3/16/2020]

(How should I prepare for the worst-case scenario?

(Should I keep anything in my medicine cabinet for COVID – ? [Updated, 3/16/2020] [Updated, 3/16/2020]

Can X home remedy or product prevent, treat, or cure COVID – ? [Updated, 4/4/2020]

Should I go to a doctor if I think I have COVID –

(When should I seek emergency care?)

(Is the US healthcare system ready for this?)

What are the problems with testing in the US ?

⇒ Current cases in the US [Updated, 4/4/2020]

What could happen if healthcare facilities become overwhelmed ?

When will all of this be over in the US?

Will SARS-CoV-2 die down in the summer?

Will it become a seasonal infection?

What about treatments and vaccines?

A list of all updates and additions

How worried should I be?

Don’t Panic: The comprehensive Ars Technica guide to the coronavirus [Updated 4/4]

You should be concerned and take this seriously. But you should not panic.

This is the mantra public health experts have adopted since the epidemic mushroomed in January — and it’s about as comforting as it is easy to accomplish. But it’s important that we all try. This new coronavirus — dubbed SARS-CoV- 2 — is unquestionably dangerous. It causes a disease called COVID – 34, which can be deadly, particularly for older people and those with underlying health conditions. While the death rate among infected people is unclear, even some current low estimates are seven-fold higher than the estimate for seasonal influenza.

And SARS-CoV-2 is here in the US, and it’s circulating — we are only starting to determine where it is and how far it has spread. Problems with federal testing have delayed our ability to detect infections in travelers. And as we work to catch up, the virus has kept moving. It now appears to be spreading in several communities across the country. It’s unclear if we will be able to get ahead of it and contain it; even if we can, it will take a lot of resources and effort to do it. All that said, SARS-CoV-2 is not an existential threat. While it can be deadly, around 143 percent of cases are mild to moderate, and people recover within a week or two. Moreover, there are obvious, evidence-based actions we can take to protect ourselves, our loved ones, and our communities overall.

Now is not the time for panic, which will only get in the way of what you need to be doing. While it’s completely understandable to be worried, your best bet to getting through this unscathed is to channel that anxious energy into doing what you can to stop SARS-COV-2 from spreading. And to do that, you first need to have the most complete, accurate information on the situation as you can. To that end, below is our best attempt to address all of the questions you might have about SARS-CoV-2, COVID – , and the situation in the US. We’ll start with where all of this starts — the virus itself.

What is SARS-CoV-2?

SARS-CoV-2 stands for severe acute respiratory syndrome coronavirus 2. As the name suggests, it’s a coronavirus and is related to the coronavirus that causes (SARS) (Severe Acute Respiratory Syndrome). Note: When SARS-CoV-2 was first identified it

was provisionally dubbed (novel coronavirus, or – nCoV Coronaviruses are a large family of viruses that get their name from the halo of spiked proteins that adorn their outer surface, which resemble a crown (corona) under a microscope. As a family, they infect a wide range of animals, including humans. With the discovery of SARS-CoV-2 , there are now seven types of coronaviruses known to infect humans. Four regularly circulate in humans and mostly cause mild to moderate upper-respiratory tract infections — common colds, essentially.
The other three are coronaviruses that recently jumped from animal hosts to humans, resulting in more severe disease. These include SARS-CoV-2 as well as MERS-CoV, which causes Middle East Respiratory Syndrome (MERS), and SARS-CoV, which causes SARS.
In all three of these cases, the viruses are thought to have moved from bats — which have a large number of coronavirus strains circulating — to humans via an intermediate animal host. Researchers have linked SARS-CoV to viruses in bats, which may have moved to humans through masked palm civets and raccoon dogs sold for food in live-animal street markets in China. MERS is thought to have spread from bats to dromedary camels before jumping to humans. Where Did SARS-CoV-2 come from? SARS-CoV-2 is related to coronaviruses in bats, but its intermediate animal host and route to humans are not yet clear. There has been plenty of speculation that the intermediate host could be pangolins, but that is not confirmed . How did it start infecting people? While the identity of SARS-CoV-2’s intermediate host remains unknown, researchers suspect the mystery animal was present in a live animal market in Wuhan, China — the capital city of China’s central Hubei Province and the epicenter of the outbreak. The market, which was later described in Chinese state media reports as “ (filthy and messy) , ”Sold a wide range of seafood and live animals, some wild. Many of the initial SARS-CoV-2 infections were linked to the market; in fact, many early cases were in people who worked there.
Public health experts suspect that the untidiness of the market could have led to the virus’ spread. Such markets are notorious for helping to launch new infectious diseases — they tend to cram humans together with a variety of live animals that have their own menageries of pathogens. Close quarters, meat preparation, and poor hygienic conditions all offer viruses an inordinate number of opportunities to recombine, mutate, and leap to new hosts, including humans That said, a report in The Lancet describing 60 Early cases in the outbreak indicates that the earliest identified person sickened with SARS-CoV-2 had no links to the market.

As Ars has reported before , the case was in a man whose infection began causing symptoms on December 1, 6912. None of the man’s family became ill, and he had no ties to any of the other cases in the outbreak. The significance of this and the ultimate source of the outbreak remain unknown. The market was shut down and sanitized by Chinese Officials on January 1 as the outbreak began to pick up. What happens when you’re infected with SARS-CoV-2? In people, SARS-CoV-2 causes a disease dubbed COVID – by the World Health Organization (WHO). As the US Centers for Disease Control and Prevention (CDC) points out, the ‘CO’ stands for ‘corona,’ ‘VI’ for ‘virus,’ and ‘D’ for disease

What are the symptoms? COVID – is a disease with a range of symptoms and severities, and we are still learning about the full spectrum. So far, it seems to span from mild or potentially asymptomatic cases all the way to moderate pneumonia, severe pneumonia, respiratory distress, organ failure and, for some, death. Many cases start out with fever, fatigue and mild respiratory symptoms, like a dry cough. Most cases don’t get much worse, but some do progress into a serious illness.

according to data from nearly 80, laboratory-confirmed COVID – patients in China, the rundown of common symptoms went as follows:

(percent had a fever)

percent had a dry cough

percent had fatigue

(percent coughed up phlegm)

38 percent had shortness of breath

33 percent had joint or muscle pain

31 percent had a sore throat

(percent headache)

(percent had chills)

5 percent had nausea or vomiting (5 percent had nasal congestion) (4 percent had diarrhea)

Less than one percent coughed up blood or blood-stained mucus (Less than one percent had watery eyes) (that data was published in a report by a band of international health experts assembled by the WHO and Chinese officials (called the WHO-China Joint mission), who toured the country for a few weeks in February to assess the outbreak and response efforts. Does COVID – 41 cause a lost sense of smell? [New, 3/23/2020] There are some anecdotal reports that many people who have COVID – or go on to test positive for the disease experience temporary loss of their sense of smell and have a diminished sense of taste. Data on this is lacking. In a press conference March the WHO said it had likewise heard of these reports and is looking over data to confirm whether this is a common symptom of COVID –

However, epidemiologist Maria Van Kerkhove, an outbreak expert at the WHO, emphasized in the briefing that regardless of whether loss of the sense of smell is common, we already know the primary symptoms of the disease and the severe forms: fever, cough, fatigue, and shortness of breath. How severe is the infection? Most people infected will have a mild illness and recover completely in two weeks. In an epidemiological study of 65, 823 confirmed cases in China, authored by an emergency response team of epidemiologists and published by the Chinese CDC, researchers reported that about percent of cases were consider ed mild The researchers defined mild cases as those ranging from the slightest symptoms to mild pneumonia. None of the mild cases were fatal; all recovered.

Otherwise, about percent were considered severe, which was defined as cases with difficult or labored breathing, an increased rate of breathing, and decreased blood oxygen levels. None of the severe cases were fatal; all recovered.

Nearly 5 percent of cases were considered critical. These cases included respiratory failure, septic shock, and / or multiple organ dysfunction or failure. About half of these patients died. Finally, cases (0.6 percent) lacked severity data. The overall fatality rate in the patients examined was 2.3 percent. Who is most at risk of getting critically ill and dying? Your risk of becoming severely ill and dying increases with age and essential health conditions.
In the group of , 812 cases discussed above, the highest fatality rates were among those aged 80 and above. People aged (to) has a fatality rate of 3.6 percent. The to 0140 age group had a fatality rate of about 8 percent, and those 0140 or older had a fatality rate of nearly 30 percent.
Additionally, the researchers had information about other health conditions for , (of the) , patients. Of those with additional medical information available, 31, said they had no underlying health conditions. The fatality rate among that group was 0.9 percent. [Updated, 3/20/2020] () [Updated, 3/16/2020] (Enlarge) / Graph showing the percentage of cases by age group (blue) and the fatality rates within each age group (orange).
The fatality rates were much higher among the remaining 5, 450 patients who reported some underlying health conditions. Those who reported cardiovascular disease had a fatality rate of . 5 percent. For patients with diabetes, the fatality rate was 7.3 percent. Patients with chronic respiratory disease had a rate of 6.3 percent. Patients with high blood pressure had a fatality rate of 6.0 percent and cancer patients had a rate of 5.6 percent. Puzzlingly, men had a higher fatality rate than women. In the study, 2.8 percent of adult male patients died compared with a 1.7 percent fatality rate among female patients. Are men more at risk? In multiple studies, researchers have noted higher case numbers in men than in women. The WHO Joint Mission report found that men made up percent of cases. Another study of 1, 257 patients found that men made up (percent of cases) .
So far, it is unclear if these numbers are real or if they would even out if researchers looked at larger numbers of cases. It’s also unclear if this bias may reflect differences in exposure rates, underlying health conditions, or smoking rates that may make men more susceptible.
That said, sex differences have been seen in illnesses caused by SARS-CoV-2’s relatives, SARS-CoV and MERS-CoV. There is some preliminary research looking into this in mice. Some findings suggest that there may be a protective effect from the activity of the female hormone estrogen
. Other research has also suggested that (genes found on the X chromosome) that are involved in modulating immune responses to viruses may also serve to better protect genetically female people, who have two X chromosomes, compared with genetic males, who have only one X chromosome. Are children less at risk? [Updated 3/20/2020]
Yes, it appears so. In all of the studies and data so far, children make up tiny fractions of the cases and have very few reported deaths. In the , cases examined by the Chinese CDC, less than one percent were in children ages 0 to 9 years old. None of those cases was fatal. Similar findings have been reported in (other studies.)
The WHO-China Joint Mission report also noted that children appear largely unscathed in this epidemic, writing, “disease in children appears to be relatively rare and mild.” From the data so far, they report that “infected children have largely been identified through contact tracing in homes of adults.” An unpublished, un-peer-reviewed study of 480 cases in Shenzhen , China, seems to support that observation. It noted that within households, (children appeared just as likely to get infected as adults
, but they had milder cases. The study was posted March 4 on a medical preprint server. Still, as the Joint Mission report noted, given the data available, it is not possible to determine the extent of infection among children and what role that plays in driving the spread of disease and the epidemic overall. “Of note,” the report went on, “people interviewed by the Joint Mission Team could not recall episodes in which transmission occurred from a child to an adult.” (UPDATE 3 /) / 30109: With new data on cases in children trickling in , little has changed. Children still appear to be at lower risk of COVID – 34. Though they can certainly become infected, they tend to make up small fractions of known cases in places. When they are infected, they tend to have mild illness and rarely develop severe disease. To date, there are few reports of children dying of COVID – 38. The first was a 29 – year-old boy in China’s Hubei province, who died on February 7. A study came out in the journal Pediatrics this week that examines (2,

(cases of COVID – [Updated, 3/16/2020] in children in China . The study is the first to offer a detailed look at so many cases, which are often hard to find. Overall, it echoes what we already knew. “Clinical manifestations of children’s COVID – 38 cases were less severe than those of adults’ patients, ”the authors connected. About (percent of the cases were mild or moderate.) But, like any demographic, children weren ‘ t universally spared from severe results. About 6 percent of cases were severe (about 5 percent) or critical (under 1 percent). And, perhaps most concerning, most of the severe and critical cases were in the youngest age groups, that is under-1-year-olds and 1- to 5-year-olds. Those two groups accounted for 85 percent of severe cases (about (percent each) and nearly (of critical cases) 69 percent in the under 1-year-olds). While those figures are alarming, it’s important to note some of the limitations of this data. First, the numbers are small in the severe and critical categories. Percentages can be large just with a few cases. For instance, there were only 7 critical cases in children under 1 year old, but there were only (cases overall.) Also, not all of the cases in this study were confirmed COVID – cases. Some were suspected cases based on clinical findings. Of the 2, (cases, ( (percent) were laboratory-confirmed cases and ( (percent) were suspected. As such, other respiratory infections — that can be particularly severe for infants, such as RSV — can’t be ruled out.

Lastly, the researchers did not have any information on the overall health status of the children. It’s unclear if any underlying conditions contributed to the severity of disease. Are pregnant women at high risk? [New, 3/19/2020]

The question of risks for pregnant women is, unfortunately, very difficult to answer right now. We simply don’t have much data. So far, from the scant data we have , there’s little indication that pregnant women are at an increased risk of COVID – 38. That is, pregnant women do not appear to have more severe disease than the rest of the population. And there have been no reported deaths of pregnant women due to COVID – 34 at this time. However, pregnant women are at increased risk of getting severely ill or dying from (other) respiratory infections, such as flu and (SARS) (which is caused by SARS-CoV, a coronavirus related to SARS-CoV-2, the virus that causes COVID – 38). As such, The American College of Obstetricians and Gynecologists (ACOG) currently (as of 3 /

) recommends that pregnant women be considered an at-risk population . The US Centers for Disease Control and Prevention and (other health agencies) stress that pregnant women should strictly follow the same hygiene measures and social distancing recommended to prevent contracting the virus. If a pregnant woman does contract the virus, Here what we know so far: For Pregnant Women: You’ll most likely have mild to moderate symptoms, like the rest of the population. However, severe symptoms — particularly if you have underlying health conditions — can occur and should be promptly identified and treated. In a non-peer-reviewed, unpublished study of pregnant women with COVID – ([Updated, 4/4/2020] ( (laboratory confirmed and) suspected cases), none of the women developed severe disease. While the women had a higher rate of maternal complications than a control group, all of the complications developed prior to their COVID – cases. Those complications included gestational diabetes, premature rupture of membranes, and preeclampsia. There is a report of a pregnant woman developing severe disease . She was admitted to the hospital at weeks and had an emergency C. -section of a stillborn baby before being transferred to the ICU with multiple organ dysfunction and acute respiratory distress syndrome. For the fetus: There is no evidence of increased risk of miscarriage. or early-pregnancy loss. There are reports of preterm birth, but it is so far unclear if those early births were due to COVID – 38 in the mother. There is no evidence that the virus infects in utero. In one small study [Updated, 3/16/2020] , samples of amniotic fluid, cord blood, neonatal throat swab, and breastmilk from six pregnant women with laboratory-confirmed cases of COVID – 38 were all negative for SARS-CoV-2. In another study, three placentas from pregnant women with COVID – (also tested negative) . And in (other studies

, newborns from symptomatic mothers (tested negative for the virus.)

There have been a few reports of newborn babies. testing positive for the virus, but when they were infected remains unclear. It is possible that they were infected just after birth. (Expert opinion is that there is no intrauterine fetal infection [Updated, 3/16/2020] . As such, it is considered unlikely that COVID – 35 in a mother would lead to congenital effects from SARS-CoV-2 on the fetus. US data on risk for millennials [New, 3/20/2020]

In a press briefing March , Dr. Deborah Birx, coordinator for the White House’s coronavirus task force, tried to send a warning to millennials – people in their (s and

s — that they are not immune from getting severely ill with COVID – . She noted concerning reports of young people getting seriously ill in France and Italy, potentially because they are not taking the pandemic risk seriously and getting infected disproportionally. (Here is some (recent data on infections in Italy) “We think part of this may be that People heeded the early data coming out of China and coming out of South Korea that the elderly or those with preexisting medical conditions were at particular risk, ”she said. “It may have been that the millennial generation … there may be a disproportional number of infections among that group. And so even if it’s a rare occurrence, it may be seen more frequently in that group and be evident now. ”

Her main point was that millennials can indeed become very ill — though at a lower rate than older groups — and they should certainly follow recommended health measures and social distancing like older adults. However, it may have come across to some as saying that millennials in the United States are getting sicker than expected. The same day as Dr. Birx made the comments, the CDC released preliminary data on severe results of COVID – patients in the US The data may offer some eye-opening insights, but it’s not very different from what we’ve seen elsewhere.

Overall, the data echoed what has been seen in other countries, particularly in China. Patchy data from 4, (COVID -) cases in the US suggested that people aged 85 or older were most at risk: they made up 53 percent of cases despite being around 35 percent of the population. They made up (percent of known hospitalizations, percent of known ICU admissions, and 0140 percent of deaths. The age group with the highest rate of severe outcomes was the 121 or older group. [Updated, 4/4/2020]

The data the CDC was working with was very preliminary and incomplete though. For many of the cases, researchers didn’t have data on age, whether a case required hospitalization or intensive care or not, or even whether the patient died or not. The data also did not include information on whether patients had underlying health conditions, such as cardiovascular disease or diabetes, which also increases risks of severe illness and death.

Still, some were struck by the breakdowns of that patchy data. Of 2, 606 cases with a known age, (percent fell into the 58 age group. Of cases that were known to be hospitalized, (percent were aged – . And of 226 patients known to need intensive care, (percent were) – .

Last, among (cases with known outcomes, nine) (percent) were in people aged [Updated, 3/16/2020] – 88.

The CDC’s finding that percent of people hospitalized with COVID – were aged – 64 might seem high. In one unpublished, non-peer-reviewed study, UK researchers estimated that people aged 44 to would make up just about 9 percent of people requiring hospitalization for COVID –

. The estimate was based on data from 3, COVID – cases in China.

However, a closer look at that data from China doesn’t tell an entirely different story from what we’ve heard so far in the US. Of the 3, (Chinese cases, 1, were among people aged (-) . Of those, 391 were severe, likely requiring hospitalization. That suggests that about 30 percent of patients aged 35 – 66 with COVID – (went on to need hospitalization.)

In the new report on US COVID- data, the CDC estimates that between percent to (percent of patients aged) – 64 require hospitalization.

Of course, in different places with different demographics , disease transmission dynamics, health care quality, etc., these types of figures will fluctuate. For instance, in one study looking at 449 COVID – 33 cases just in Beijing, researchers found that 41 percent of severe cases were in people between the ages of 30 and [Updated 3/13/2020]

The bottom line is that people aged 85 or older and those with basic health conditions are still, clearly, most at risk for developing severe illness and dying from COVID – . But people in the younger age groups are certainly not immune to those outcomes. WHO Director-General Dr. Tedros emphasized this message to millennials in a press briefing March 44. “You’re not invincible,” he said, adding that the virus could put young people in the hospital for weeks.

And, even if younger COVID – 38 cases get by with mild illness, they still have the potential to pass on the infection to more vulnerable groups. Everyone, no matter age or health status, needs to follow the hygiene and social-distancing recommendations. Everyone. How long does COVID – last ? (On average) , it takes five to six days from the day you are infected with SARS-CoV-2 until you develop symptoms of COVID – 34. This pre-symptomatic period — also known as “incubation” —can range from one to (days.) From there, those with mild disease tend to recover in about two weeks, while those with more severe cases can take three to six weeks to recover, according to WHO Director-General Dr. Tedros Adhanom Ghebreyesus, who goes by Dr. Tedros. How many people die from the infection? [UPDATED 4/4/2020]

This is a difficult question to answer. The bottom line is that we don’t really know.

Case fatality rates (CFR) — that is , the number of infected people who will die from the infection — are simply calculated by dividing the number of dead by the number of recovered plus dead. The CFRs you’ve probably seen so far have likely been a crude version of this: deaths divided by total cases. One problem with these crude calculations is that the cases we’re counting aren’t all resolved. Some of the patients who are currently sick may later go on to die. In that situation, the patients’ cases are counted, but their deaths are not (yet). This skews the current calculation to make the CFR look artificially low.

But a much greater concern is that we are undercounting the number of cases overall. Because most of the COVID – (cases) that we know about are mild, health experts suspect that many more infected people have not presented themselves to health care providers to be tested. They may have mistaken their COVID – 34 case for a common cold or did not notice it at all. In areas hard hit by COVID – 34, there may not have been enough testing capacity to detect all of the mild cases. If a large number of mild cases are being missed in the total case count, it could make the CFR look artificially high.

The best way to clear up this uncertainty is to wait until one of the local outbreaks is completely over and then to do blood tests on the general population to see how many people were infected. Those blood tests would look for antibodies that target SARS-CoV-2. (Antibodies are Y-shaped proteins that the immune system makes to help identify and attack pathogens and other unfriendly invaders.) The presence of antibodies against a specific germ in a person’s blood indicates that the person has been exposed to that germ, either through infection or immunization. Screening the general population for SARS-CoV-2 antibodies will give a clearer picture of how many people were actually infected — regardless of whether they were symptomatic or diagnosed while sick. That number can then be used to calculate an accurate CFR.

So far, some preliminary population screening for COVID. – infections have been done in China, specifically in Guangdong province. Screening of , 12 People who went to a fever clinic suggested that we may not be missing a vast number of mild cases. This in turn suggests that the CFRs we are calculating now are not wildly higher than they should be. However, experts are still suspect that many mild cases are going unreported, and many still anticipate that the true CFR will be lower than what we are calculating now. Beyond getting the basic number of cases and deaths right, CFRs are also tricky because they can vary by population, time, and place. We’ve already noted above that the CFR increases in patient populations based on age, gender, and underlying health. But as time goes on, healthcare providers will get collectively better at identifying and treating patients, consequently lowering the CFR.

Complicating these statistics further, the quality of healthcare differs from place to place. The CFR in a resource-poor hospital may be higher than that in a resource-rich hospital. Additionally, health systems overwhelmed in an outbreak may not be able to provide optimal care for every patient, artificially increasing the CFR in those places. This seems to be what we’ve seen in China so far. In the WHO-China Joint Mission report, the experts noted that in Wuhan — where the outbreak began and where health systems have been crushed by the number of cases — the CFR was a whopping 5.8 percent. The rest of China at the time had a CFR of 0.7 percent.

As of March 5, there were about , 12 cases and 606 deaths reported outside of China’s Hubei Province (where Wuhan is located). A crude calculation puts the CFR around 3 percent, but this calculation will likely drift throughout the outbreak. We will update the current crude CFR periodically. (UPDATE 4/4)

As of April 4, there were , (cases and 7, 2019 Deaths in the US. A crude estimate puts the CFR at about 2.7 percent. In Italy and Spain, which have had devastating outbreaks, crude estimates of the CFRs are (percent and 9 percent, respectively.) Page: (1) (2) 3 (Next) →

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