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Social distancing is the only way to stop the coronavirus.
We don’t yet know the full ramifications of the novel coronavirus. But four crucial facts have become clear in the first months of this extraordinary global event.
The first fact is that, at least in the initial stages, documented cases of COVID-19 seem to increase in exponential fashion. On the 23rd of January, China’s Hubei province, which contains the city of Wuhan, had 444 confirmed COVID-19 cases. A week later, by the 30th of January, it had 4,903 cases. Another week later, by the 6th of February, it had 22,112.
The same story is now playing out in other countries around the world. Italy had 62 identified cases of COVID-19 on the 22nd of February. It had 888 cases by the 29th of February, and 4,636 by the 6th of March.
Because the United States has been extremely sluggish in testing patients for the coronavirus, the official tally of 604 likely represents a fraction of the real caseload. But even if we take this number at face value, it suggests that we should prepare to have up to 10 times as many cases a week from today, and up to 100 times as many cases two weeks from today.
The second fact is that this disease is deadlier than the flu, to which the honestly ill-informed and the wantonly irresponsible insist on comparing it. Early guesstimates, made before data were widely available, suggested that the fatality rate for the coronavirus might wind up being about 1 percent. If that guess proves true, the coronavirus is 10 times as deadly as the flu.
But there is reason to fear that the fatality rate could be much higher. According to the World Health Organization, the current case fatality rate—a common measure of what portion of confirmed patients die from a particular disease—stands at 3.4 percent. This figure could be an overstatement, because mild cases of the disease are less likely to be diagnosed. Or it could be an understatement, because many patients have already been diagnosed with the virus but have not yet recovered.
When the coronavirus first spread to South Korea, many observers pointed to the comparatively low death rates in the country to justify undue optimism. In countries with highly developed medical systems, they claimed, a smaller portion of patients would die. But while more than half of all diagnosed patients in China have now been cured, most South Korean patients are still in the throes of the disease. Of the 7,478 confirmed cases, only 118 have recovered; the low death rate may yet rise.
Meanwhile, the news from Italy, another country with a highly developed medical system, has so far been shockingly bad. In the affluent region of Lombardy, for example, there have been 7,375 confirmed cases of the virus as of Sunday. Of these patients, 622 had recovered, 366 had died, and the majority were still sick. Even under the highly implausible assumption that all of the still-sick make a full recovery, this would suggest a case fatality rate of 5 percent—significantly higher, not lower, than in China.
The third fact is that so far only one measure has been effective against the coronavirus: extreme social distancing.
Before China canceled all public gatherings, asked most citizens to self-quarantine, and sealed off the most heavily affected region, the virus was spreading in exponential fashion. Once the government imposed social distancing, the number of new cases leveled off; now, at least according to official statistics, every day brings more news of existing patients who are healed than of patients who are newly infected.
A few other countries have taken energetic steps to increase social distancing before the epidemic reached devastating proportions. In Singapore, for example, the government quickly canceled public events and installed medical stations to measure the body temperature of passersby while private companies handed out free hand sanitizer. As a result, the number of cases has grown much more slowly than in nearby countries.
Finally, the coronavirus is destroying the economies of the world, it is estimated that the losses in just three months, are greater than 2.7 Trillion dollars, which can lead us to a process of global economic depression.
What can we do now, just be responsible to ourselves and the people around us, think and not stop planning our life and our events once the high peak of contagion ends and the health systems improve.