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Has the Third Covid Wave Already Hit India? Here's What Data Suggests

By: Santosh Chaubey

Last Updated: July 17, 2021, 11:59 IST

A BMC health worker collects swab sample of a passenger for COVID-19 test, at a station in Mumbai, July 2. (PTI)

A BMC health worker collects swab sample of a passenger for COVID-19 test, at a station in Mumbai, July 2. (PTI)

A deeper look at Covid data tells us that the third wave has already hit India.

World Health Organisation chief Tedros Adhanom Ghebreyesus said this week that the world was in early stages of a third Covid-19 wave. Several studies, including one by the Indian Council of Medical Research (ICMR), found the third wave could hit India by August end. But a deeper look at Covid data tells us that the third wave has already hit India.

On July 7, India saw active cases rising in the country after 55 days. The day saw an addition of 784 active cases with the total active caseload burden going slightly up to 460,704, data released from the Union Health Ministry showed. And the second rise came just within a week, on July 14, when, this time, active cases went up by 2,095. Data released by the Health Ministry recently showed 73 districts still have a positivity rate of over 10%. This means 10 people turning out positive from 100 tested and 47 of such districts are in northeast India.

The stabilising trend in Covid-19 cases can be confirmed by regular and rapid fall in the weekly drop in the active and daily cases in last two months. Dr VK Paul of Niti Aayog has said that the slowdown in fall in cases is a warning sign.

Slow down in fall of active cases

Active caseload burden came down by 22.61% in the week ended on May 27 and the fall saw further decline in the next two weeks, by 30.18% and 31.44% between May 28-June 3 and June 4-10 weeks respectively. But from then on, the country started witnessing a dangerous signal – the rate of fall of active cases rapidly came down week after week.

The week that ended on June 24 saw a drop of 23.26% in the active Covid-19 caseload burden that got further reduced to 16.84% in the week ended on July 1, 10% in the week ended on July 8 and 6.17% in the last week ended on July 15 with India’s current active caseload burden at 4,30,422 cases.


The upward trend of Covid spread is also confirmed by the fact that the drop in seven-day rolling average of daily confirmed cases, which first slowed down rapidly, but has started rising again with daily new cases showing an upward trend. In fact, the fall in the number of daily cases has also slowed down. Daily fresh cases saw their lowest point this month so far on July 12 with 32,906 cases but since then the number has gone up. Also, confirmed cases have stuck in the range of 40,000 cases daily.

It touched a peak of 3,91,232 cases on May 8. On May 31, it came down to 1,75,167 cases and further dropped to 46,979 cases on June 30. But the last days of June are also the period that slowed down the rate of fall of seven-day day average to a thousand or less than thousands daily cases a day. The average of confirmed cases touched the lowest so far on July 12 with 36,349 cases but after that, the rolling average has started increasing day by day and the current average is 39,125 confirmed cases a day.

Daily recovered cases are still above the daily fresh cases, but the scale has rapidly declined. May 20 saw 2,59,551 new cases against 3,57,295 Covid patients recovering on the same day, or 36.66% more recoveries than the new cases added to existing Covid cases. Compare that to July 15, when the country saw 38,949 new cases with daily recoveries just slightly more at 40,226 cases, or just 3.84% more Covid patients recovered the same day when compared with the daily case addition.

fall in Covid ratio

Rapid increase in R-value

The number of active cases plateauing should be a double warning for the arrival of the third Covid wave in India when we combine it with R-value. The R-value or the reproductive number or the effective transmission rate tells how fast the coronavirus spreads from one person to the next person. The R-value must be less than 1 for the pandemic to end. In India, the R-value was the lowest in May and is now increasing rapidly, and that only means that the coronavirus has started transmitting again and Covid is spreading across the country.

Analysed by a team of researchers, led by Sitabhra Sinha from the Institute of Mathematical Sciences, Chennai (IMSC), India’s R-value came below 1, at 0.98, around May 11 and subsequently fell to the lowest point since the beginning of the pandemic, at 0.78 around June 16 from the peak of 1.37 between March 9 to April 11. But the R-value has started rising again with eased lockdown measures and almost non-existent Covid appropriate behavior.

The R-value was up from 0.78 to 0.88 between June 20 and July 7, as per an NDTV analysis. It touched a new high of 0.95 on July 16.

What is more worrisome here is the fact that though R-value is still below 1 across India, it has crossed the threshold mark in some states with Home Ministry warning such states to push for Covid appropriate behaviour. As per IMSC analysis, Kerala’s R-value is 1.10 along with some northeastern states (Tripura 1.15), Arunachal Pradesh (1.14) and Manpur (1.07).

Another Covid tracker, ‘Covid India Updates’, put the current R-value even higher, at 0.97 on July 5. As per this tracker, India’s R-value was 1 on April 27 that saw a declining trend till May 28 when it touched the base 0.75 but started increasing after it.

Analysed till July 5, the tracker puts Kerala’s R-value at 1.03 while Maharashtra’s R-value went above 1 between June 13 and 26 and Odisha’s between June 19 to 26. Tamil Nadu saw lowest R-value on June 12, at 0.69 and it went up from there to currently at 0.88. Andhra Pradesh saw its lowest R-value on May 25, at 0.73 while the current value is 0.93. Karnataka’s R-value was 0.71 on June 9 which went to 0.91 by July 5.

So, even if the second Covid wave did not completely subside in these big states, the lockdown relaxation and absence of Covid appropriate behaviour, in fact, added more trouble to India’s Covid crisis by starting the initial stage of the third Covid wave in the country.

States to watch out for

Prime Minister Narendra Modi held a meeting with chief ministers of six states — Kerala, Maharashtra, Tamil Nadu, Odisha, Karnataka and Andhra Pradesh — over the rise of Covid cases. These six states account for 80% of the total cases and 84% of deaths from Covid, with Kerala and Maharashtra responsible for more than half of the active and fresh caseload burden. Also, when compared to other states, these six states have seen a much higher growth rate in Covid cases in recent times.

Kerala a warning sign: Kerala saw weekly cases going up from the week that ended on June 24. Between June 25 to July 1, its active caseload increased by 2.20%, between July 2 to 8 by 7.8% and by 8% in the last week. On the rise in the number of active case, with R-value of 1.10, Kerala currently shares 27.74% burden of active Covid cases in India and 35% of the fresh caseload burden while the daily test positivity ratio of the state is also 10.95%, much higher than India’s daily positivity rate of 1.99%.

On July 14, the state saw the highest cases in a month with 15,637 people turning positive. The worst affected districts are Malappuram with 1,867 cases, Kozhikode with 1,674 cases, Ernakulam with 1,517 cases, Thrissur with 1,390 cases and Kollam with 1,100 cases. A total of 3,95,560 people are under Covid surveillance in the state which saw an increase of 6.87% in cumulative cases between June 15 and June 30 and 6.13% between July 1 and July 15.

Maharashtra not far behind: Maharashtra carries the second-highest number of active cases in India, at 1,10,505, i.e., 25.67% of India’s active caseload burden. The state that initially carried half of the burden of the active caseload in India has seen ups and downs in its weekly active caseload burden. Accounting for 20% of India’s daily case addition, the state has a daily test positivity rate of 3.7% against 1.99% nationally. The state saw a 2.41% increase in cumulative cases between June 15 and June 30 and 1.95% between July 1 and July 15 and its current cumulative burden is 61,89,257 cases.

The worst affected districts in the state are Pune with 17,401 cases, Thane with 15,653 cases, Sangli with 11,346, Kolhapur with 11,264 cases, and Mumbai with 10,925 cases.

Conditions in Kerala and Maharashtra are similar to the situation before the second Covid wave in India.

Four other states, Karnataka, Odisha, Tamil Nadu and Andhra Pradesh have seen weekly active cases going down in the last two months barring a week or two but what is important here in these six states, with a large base of active cases, that they are consistently seeing an upswing in new cases.

Karnataka saw its cumulative case burden increase by 1.1% between July 1-15 and by 2.52% between June 15-30 with its current cumulative caseload burden at 28,78,564 cases and 32,406 active cases. Tamil Nadu has 29,950 active cases. The state saw 1.8% growth in cumulative cases between July 1-15 and 4.45% between June 15-30 with its current cumulative caseload burden at 25,28,896 cases. Andhra Pradesh with its 19,32,105 cumulative cases saw a growth of 4% between June 15-30 and 2% between July 1-15. Odisha with 19,789 active cases saw a growth of 3.71% between July 1-15 and 6.32% between June 15-30.

Odisha has a daily test positivity ratio of 3%, followed by Andhra Pradesh’s 2.9% data from a Covid tracker website Covid19India says. Tamil Nadu’s daily positivity rate of 1.4% is below the national average of 1.99% followed by Karnataka’s 1.4%.

Northeastern states: Northeastern states together account for 7% of the active cases in India. With around 4.55 crore people in the region as per Census 2011, i.e., just 3.76% of the total Indian population, these states right now carry a much bigger active caseload burden than some of the big states like Uttar Pradesh, Bihar, Chhattisgarh, Gujarat, Madhya Pradesh, Punjab, Rajasthan, and Haryana.

Manipur that carried 8,558 active cases on July 15 saw active caseload burden going up by 44% between July 1 and July 15; Mizoram with 5,612 active cases saw a fortnightly increase of 42%; Tripura with 4,863 active cases saw it went up by 27%; Arunachal Pradesh with 4,177 active cases saw it going up by 51%; and Sikkim with 2,322 active case saw it increased by 10%. Meghalaya and Nagaland, on the other hand, saw the active caseload burden coming down by 5% and 21% respectively.

But all northeastern states saw cumulative daily cases going up in the same period – Mizoram (28%); Manipur (16%); Arunachal Pradesh (16%); Meghalaya (13%); Sikkim (11%); Tripura (9%); and Nagaland (4%).

88 crore Indians still unvaccinated

Dr VK Paul said that WHO’s warning about the third Covid wave in fact should be seen as a red flag with situation turning from bad to worse. the next 100 to 125 days were critical for the fight against the pandemic in the country he said.

India is in an almost complete phase of unlock, with Covid appropriate behavior largely absent, something that is visible in repeated requests made by the prime minster and other leaders and officials.

While vaccination looks like the only solution to handle the emerging crisis, its pace has slowed down considerably. Going by the average of the current daily vaccination, the country will still have 46 crore adults, and 88 crore people unvaccinated at the beginning of the next month. They might be vulnerable to the deadly virus unless we act fast.

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first published:July 17, 2021, 11:46 IST
last updated:July 17, 2021, 11:59 IST