All models predict India’s second wave to last until July or August, ending with about 35 million confirmed cases and possibly 500 million estimated infections. That would still leave millions of susceptible people in India. The timing and scale of the third wave would depend on the proportion of vaccinated people, whether newer variants emerge and whether India can avoid additional superspreader events, like large weddings and religious festivals. What worries me is that we may not even be able to measure the peak cases accurately. Data show that testing is increasing at a far slower rate than cases. In this scenario, numbers will reach a plateau — not because case numbers have stopped rising but because testing capacity will be tapped out. The national average test positivity rate is over 22 percent, but several states have rates that are, alarmingly, even higher — including Goa at 46.3 percent and Uttarakhand, which hosted the Kumbh festival, at 36.5 percent. “India will have a manufactured peak of about 500,000 daily cases by mid-May,” argued Rijo M. John, a health economist... The immediate need is to reduce spread by increased testing and isolation of people who test positive. Several Indian states are under lockdown. This would “flatten the curve,” allowing health care facilities and supplies to regroup. Rapidly enhancing the health care infrastructure will also save lives. India should increase available hospital beds by setting up temporary facilities, mobilize retired doctors and nurses, and strengthen the supply chain for critical medicines and oxygen.