Covid Second wave ends; Third-wave expected after 3 months, IIT Kanpur

Although Covid second wave is declining in the country, it is expected that a third wave takes place after 3 months. It could hit around September-October which is again fear for everyone in the country, reports Prof. Rajesh Ranjan and Mahendra Verma, along with their team from IIT Kanpur.

“There is significant anxiety among policy-makers and the public about the third wave. For the same, using the SIR model, we have constructed the following three scenarios of a possible third wave using the epidemic parameters of the second wave. We assume that India is fully unlocked on July 15. Scenario 1 (Back-to-Normal): Third-wave peak in October but a lower peak height than the second wave. Scenario 2 (Normal with virus mutations): The peak could be higher than the second one and may appear early (September). Scenario 3 (Stricter interventions): The peak of the third wave could be delayed until late October with strict social distancing. Here, the peak will be lower than the second wave,” a press statement said.

With a decline in daily  Covid cases in India, things have started appearing somewhat normal after weeks of turmoil and tragedy caused by the second wave of the pandemic.

As per the assessment from the IIT-Kanpur team, the second wave has waned significantly almost in every state except in some Northeast states -Mizoram, Manipur, Sikkim, etc.The study notes that mostly positivity rate is less than 5 percent but Kerala, Goa, Sikkim, and Meghalaya still have a positivity rate of more than 10 percent.

“India’s average daily case count has reduced significantly. As of 19 June, it is 63,000 compared to the peak of about 4 lakhs. Most states have a daily Test Positivity Rate(TPR) less than WHO recommended level (5%). However, Kerala, Goa, Sikkim, Meghalaya still have high daily TPR (>10%),” it said.

As per the study, India’s daily Case Fatality Rate (CFR) has increased recently to 3.5 percent, but the cumulative CFR of the second wave is comparable to that of the first wave.

“At present, the model does not include vaccination, which should decrease the peak significantly. A revised model with vaccination and with more recent data on the same is being worked out,” the study says.

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