India coronavirus numbers explained: More recoveries than active cases, but how relevant is that
The Indian Express
Dated: June 12, 2020
By: Amitabh Sinha
The number of people who have recovered from Covid-19 disease in India is now more than those
who are still sick. The Home Ministry’s latest update on Thursday showed that
1.41 lakh people had recovered from the disease, while a little more than 1.37
lakh cases were active.
Apart from
being an interesting milestone, this statistic has little relevance. This
doesn’t mark the beginning of the end of the epidemic, nor is it the arrival of the “peak”. It does not mean either
that the number of cases would be declining from now on. In fact, once the
number of deaths is brought into the equation, 8,102 at last count, it becomes
clear that less than 50 per cent of the total infected people (2.86 lakh) have
recovered so far. The total recoveries, in fact, work out to 49 per cent of all
cases.
More
importantly, total recoveries and the number of active cases are not comparable
metrics. Total recoveries account for everyone who has recovered from the
disease since the start of the outbreak. It is an accumulated number. Active
cases, on the other hand, are only those that have been infected in the last 14
days, if it is assumed that every infected person, apart from those who die, is
recovering in 14 days. So the comparison being made is between a number that
has accumulated over three months, and increasing, which is the case in India
right now, and a number that has emerged in the last two weeks.
Recovery rate will
keep rising
It is no surprise that with the
passage of time, the number of recoveries will progressively rise, even as a
percentage of total infections in the country. As discussed earlier, about 49
per cent of everyone who has been infected have recovered. This percentage will
increase progressively. In fact, if the overall fatality remains what
scientists expect it to be, below one per cent eventually, then, by the time
the epidemic comes to an end, more than 99 per cent of the infected would be
expected to have recovered.
Right now, the fatality rate in India is about 2.8 per cent. But
that is only because we are measuring the number of dead against the infections
that have been confirmed through testing. Most likely, there are many more
people who are also carrying the infection, but are unknown because they have
not been tested. In large population groups, like that in India, the exact
number of people infected during an epidemic may never be known, because the
entire population cannot be tested. But scientists have ways to reach reliable
estimates through careful sampling of people who can be selected for testing.
When those
untested and unconfirmed infections are also accounted for, scientists expect
the overall fatality to remain below one per cent. So, by the time the epidemic
is over, the recovery rate should go up to at least 99 per cent. That milestone
is still some distance away.
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