R value
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New Delhi: India’s effective reproduction number or R for Covid, an indicator of how fast an infection is spreading, has decreased to 0.94 this week. It was 0.98 last week.

R describes the average number of people who are likely to catch the infection from a Covid positive person. The value of R should be below 1 for the epidemic to come to an end.

R value for India
Graphic: Ramandeep Kaur | ThePrint

“Among the top 12 states and UTs in terms of current active cases that each have less than 1,000 cases, only Mizoram and Jammu and Kashmir have R much higher than one,” Sitabhra Sinha, a researcher at the Institute of Mathematical Sciences, Chennai, who has been tracking R since the beginning of the pandemic, told ThePrint.

“However, the situation in the cities continues to be bad,” Sinha added.

Mizoram and Jammu Kashmir have seen a decline in their R value over the last two weeks. For Mizoram, R declined to 1.11 this week from 1.14 last week, while for Jammu and Kashmir, it declined to 1.17 this week from 1.23.

In West Bengal, where R was 1.02 last week, it has dropped to around 1 this week.

Telangana, another state which had R above 1 last week — at 1.07 — has seen it decline to 0.96 this week.

R value for states
Graphic: Ramandeep Kaur | ThePrint

Maharashtra and Kerala, both of which had R below 1, saw further decline in the values. For Maharashtra, R went down to 0.86 this week from 0.99, while for Kerala the value dropped to 0.92 from 0.96 last week.

Most other states continue to have R below 1.

Major cities

R value for cities
Graphic: Ramandeep Kaur | ThePrint

All major cities, apart from Bengaluru and Delhi, have R above 1.

Chennai’s R increased to 1.06 this week from 1.05 last week. Similarly, Pune’s R increased to 1.13 this week from 1.09 last week.

Both Kolkata and Mumbai have R steady at 1.02.

(Edited by Neha Mahajan)


Also read: Covaxin, Covishield effectiveness highest when gap between doses is 6-8 weeks, ICMR study finds


 

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