Explainer: Why India’s pandemic data is vastly undercounted

Published May 2, 2021
The body of a Covid-19 victim lies covered in white cloth next to a burning pyre of another victim at a cremation ground in Prayagraj, India, May 1. — AP
The body of a Covid-19 victim lies covered in white cloth next to a burning pyre of another victim at a cremation ground in Prayagraj, India, May 1. — AP

Even after more than a year of devastating coronavirus surges across the world, the intensity and scale of India’s current crisis stand out, with patients desperate for short supplies of oxygen, pleas for help from overwhelmed hospitals, and images of body bags and funeral pyres.

The body of a Covid-19 victim is wheeled in a ground that has been converted into a crematorium in New Delhi, India, May 1, 2021. — AP
The body of a Covid-19 victim is wheeled in a ground that has been converted into a crematorium in New Delhi, India, May 1, 2021. — AP

As daily case counts soar far beyond what other countries have reported, experts caution the official Covid-19 numbers from the world’s second most populous country are likely a massive undercount. But why is India’s data considered inaccurate? Is the data any less accurate than what other nations report? And which numbers give a good indication of the crisis?

A patient suffering from the coronavirus disease receives treatment inside the casualty ward at a hospital in New Delhi, India, May 1, 2021. — Reuters
A patient suffering from the coronavirus disease receives treatment inside the casualty ward at a hospital in New Delhi, India, May 1, 2021. — Reuters

Is India counting every case?

India is not counting every coronavirus case, but no nation can. Around the world, official tallies generally report only confirmed cases, not actual infections. Cases are missed because testing is so haphazard and because some people infected by the coronavirus experience mild or even no symptoms.

The more limited the testing, the more cases are being missed. The World Health Organisation says countries should be doing 10 to 30 tests per confirmed case.

People gather to receive Covid-19 vaccine at a medical facility in Prayagraj, India, May 1, 2021. — AP
People gather to receive Covid-19 vaccine at a medical facility in Prayagraj, India, May 1, 2021. — AP

India is doing about five tests for every confirmed case, according to Our World in Data, an online research site. The US is doing 17 tests per confirmed case. Finland is doing 57 tests per confirmed case.

"There are still lots of people who are not getting tested," said Dr Prabhat Jha of the University of Toronto. "Entire houses are infected. If one person gets tested in the house and reports they’re positive and everyone else in the house starts having symptoms, it’s obvious they have Covid, so why get tested?"

Jha estimates, based on modelling from a previous surge in India, that the true infection numbers could be 10 times higher than the official reports.

Covid-19 patients receive oxygen outside a gurdwara, New Delhi, India, May 1, 2021. — AP
Covid-19 patients receive oxygen outside a gurdwara, New Delhi, India, May 1, 2021. — AP

What about deaths?

Deaths are a better indicator of the shape of the pandemic curve, Jha said, but there are problems with the data here too.

"The biggest gap is what’s going on in rural India," Jha said. In the countryside, people often die at home without medical attention, and these deaths are vastly underreported. Families bury or cremate their loved ones themselves without any official record. Seventy per cent of the nation’s deaths from all causes occur in rural India in any given year.

Relatives prepare to cremate Covid-19 victims at a ground that has been converted into a crematorium in New Delhi, India, May 1, 2021. — AP
Relatives prepare to cremate Covid-19 victims at a ground that has been converted into a crematorium in New Delhi, India, May 1, 2021. — AP

Counting rural deaths can be done, as Jha’s work with the Million Death Study has shown. The pre-pandemic project used in-person surveys to count deaths in rural India, capturing details of symptoms and circumstances with results of the "verbal autopsies" reviewed and recorded by doctors.

Many low and middle-income countries have similar undercounts of death data, Jha said, but India could do better.

"It’s a country that’s got a space programme. Just counting the dead is a basic function," he said. "India should be doing much, much better."

Covid-19 patients receive oxygen outside a gurdwara, New Delhi, India, May 1, 2021. — AP
Covid-19 patients receive oxygen outside a gurdwara, New Delhi, India, May 1, 2021. — AP

Does it matter?

Knowing the size and scope of the outbreak and how it is changing helps governments and health officials plan their responses.

Even with the known problems with the data, the trajectory of Covid-19 cases and deaths in India is an alarming reminder of how the virus can rocket through a largely unvaccinated population when precautions are lifted.

"What happens in India matters to the entire world," said Dr Amita Gupta, chair of the Johns Hopkins India Institute in a Facebook conversation on Thursday. "We care from a humanitarian perspective, a public health perspective, and a health security perspective."

A relative of a person who died of Covid-19 mourns at a crematorium in Jammu, India, April 30, 2021. — AP
A relative of a person who died of Covid-19 mourns at a crematorium in Jammu, India, April 30, 2021. — AP

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