India is fast becoming the world’s new virus epicentre, setting a record for the biggest single-day rise in cases as experts predict that it will soon pass Brazil – and ultimately the US – as the worst outbreak globally.

As many as 78,761 new cases were added on Sunday, the most any country has ever reported in one day, while 971 deaths were reported on Monday, pushing the Asian country past Mexico for the third-highest number of deaths worldwide. At the current trajectory, India’s outbreak will eclipse Brazil’s in about a week, and the US in about two months.

And unlike the US and Brazil, India’s case growth is still accelerating seven months after the reporting of its first coronavirus case on January 30. The pathogen has only just penetrated the vast rural hinterland where the bulk of its 1.3 billion population lives, after racing through its dense mega-cities.

“As the world’s second largest country, and one with a relatively poor public health system, it is inevitable that India’s outbreak becomes the worlds biggest,” said Naman Shah, an adjunct faculty member at the countrys National Institute of Epidemiology.

“It would not be surprising, regardless of what India does,” said Shah, a member of the Indian governments Covid-19 task force.

A unique problem for poor countries

From the Philippines to Peru, the novel coronavirus poses a unique problem to poor countries: the densely packed slums where millions of their citizens live present ideal conditions for the virus to spread, while their economic precariousness means that the shutdowns necessary to contain the pathogen are intolerable.

Across the developing world, economies have been forced to open up even with the virus still running rampant, quickly overwhelming underfunded hospitals.

The list of worst-affected countries globally has, accordingly, shifted from rich to poor as the pandemic races around the world. Where once countries like Italy, Spain and the UK had the biggest outbreaks and highest death tolls, now the US is the only advanced economy in the top 10, among other developing nations like Mexico, Peru and South Africa.

Nowhere has the developing world’s plight played out more viscerally than in India, where an ambitious national lockdown imposed in March was lifted after two months as joblessness, starvation and a mass migration of workers leaving cities on foot became too much to bear.

Prime Minister Narendra Modi’s government has since counseled the population to live with the virus while giving local officials freedom to impose restrictions on a state-by-state basis, which many have. The economy is projected to have contracted 18 per cent in the quarter to June from a year ago, more than any other major Asian country.

With antibody studies in capital New Delhi and other cities showing that the number of people with signs of past infection is between 40 and 200 times greater than the official case count, the true size of Indias epidemic is probably far larger than its reported 3.6 million infections.

And there is every reason to believe that the coronavirus is still only getting started in India. Much of the country’s coronavirus burden so far has fallen on its globally connected megacities such as New Delhi and Mumbai, but the disease is now starting to shift to its rural hinterland where nearly 900 million people live, and health-care infrastructure is sparse. A lack of testing and medical help will likely mean that scores of infections and deaths are going unreported.