Tuesday, February 27, 2024

CORONOA CANNOT BE A PANDEMIC AFTER FEBRUARY, IS IT TRUE?

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A group of India’s top scientists latest mathematical model suggests India passed its peak of reported infections in September and the pandemic can be controlled by February next year.

India has recorded some 7.5 million Covid-19 cases and more than 114,000 deaths so far. It has a sixth of the world’s population and a sixth of reported cases. However, India accounts for only 10% of the world’s deaths from the virus. Its case fatality rate or CFR, which measures deaths among Covid-19 patients, is less than 2% – among the lowest in the world. India hit a record peak in the middle of September when it reported more than a million active cases. Since then the caseload has been steadily declining. Daily deaths have also been falling in most states. Testing has remained consistent – an average of more than a million samples were tested every day last week.

The seven scientists involved in the latest mathematical study commissioned by the government include Dr Gagandeep Kang, a microbiologist and the first Indian woman to be elected Fellow of the Royal Society of London. Among other things, the model looks at the rate at which people are getting infected, the rate at which they have recovered or died, and the fraction of infected people with significant symptoms. It also maps the trajectory of the disease by accounting for patients who have shown no signs of infection.

The scientists suggest that without the lockdown in late March, the number of active cases in India would have peaked at more than 14 million and that more than 2.6 million people would have died from Covid-19, some 23 times the current death toll. Interestingly, based on studies in the two states of Bihar and Uttar Pradesh, the scientists concluded that the impact of the unchecked return of out-of-work migrants from the cities to the villages after the lockdown had “minimal” impact on case numbers.

But India’s busy festival season is around the corner. This is when families get together. So, a few “superspreader” events and increased mobility could still change the course of the virus in two weeks. Kerala, for instance, recorded a sharp uptick in cases in September following celebrations of Onam, a harvest festival.

The scientists have warned of a massive spike in cases if people let their guard down.

Mathukumalli Vidyasagar, a professor at the Indian Institute of Technology Hyderabad, said, “All our projections will hold if people adhere to the safety protocols. We believe India went past the peak [of active infections] in September. We must not relax. There is a human tendency to think that the worst is behind us”.

But most epidemiologists believe that another peak is inevitable and that northern India will likely see a rise in caseloads during a smog-filled winter that begins in November. They believe that the recent decline in cases and deaths is a promising sign, but it’s far too early to say that the pandemic is receding. Dr Bhramar Mukherjee, a professor of biostatistics and epidemiology at the University of Michigan believes there could be a rise in deaths in the winter due to pollution, which is especially bad for respiratory diseases.

All such models assume the obvious: people will wear masks, avoid large gatherings, maintain social distancing and wash hands. Clearly, hope can be quickly extinguished by complacency. So keep your mask on, and avoid large gatherings.

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