Saturday, 25 June, 2022
HomeHealthAt 0.78, India's R value lowest since pandemic began, but WB sees...

At 0.78, India’s R value lowest since pandemic began, but WB sees sharp rise in infection rate

R value for West Bengal increased to 1.36 this week from 0.40 last week. All other states with a high number of active cases have R below 1.

Text Size:

New Delhi: Even as India’s effective reproduction number (R) for Covid — an indicator of how fast the infection is spreading — hit a record low of 0.78, West Bengal witnessed a sharp increase in its R, with the value rising to 1.36.

The R value describes the average number of people who can get infected from one Covid patient. R needs to stay below 1 for the pandemic to come to an end.

Over the last two weeks, the R for India has dropped to 0.78 — the lowest since the beginning of the pandemic.

Graphic: Ramandeep Kaur | ThePrint

However, the value may rise again if pandemic-related restrictions are lifted.

According to Sitabhra Sinha, a researcher at the Institute of Mathematical Sciences in Chennai, who has been tracking R values across Indian states since the beginning of the pandemic, West Bengal’s R is the highest among states with the highest number of active cases.

As of Tuesday, West Bengal recorded 20,046 active cases of Covid-19. All other states with the highest burden of active cases have R below 1.

R for states

Graphic: Ramandeep Kaur | ThePrint

States like Telangana and Kerala saw also a rise in their R values, although it continues to be below 1.

For Telangana, the value rose from 0.74 to 0.84. For Kerala, the rise was much smaller — from 0.79 to 0.81.

For the last three weeks, Delhi too has been experiencing a small but steady rise in R.

Around May 25, Delhi’s R was at 0.43. This increased to 0.55 around June 1 and further rose to 0.57 last week. This week, the value is at 0.59.

For Maharashtra, R has remained steady for the last two weeks at 0.83. Similarly, Karnataka has maintained R at 0.80 for the last several weeks.

Major cities

Graphic: Ramandeep Kaur | ThePrint

The sharp increase in West Bengal’s R is likely driven by a similar increase in R for Kolkata, which rose to 1.35 this week from 0.28 last week.

For Bengaluru, R has been steadily rising from 0.71 around May 25 to 0.75 last week. This week it has further increased to 0.85.

Mumbai and Pune have R values at 0.95 and 0.92 respectively.

Meanwhile, Chennai’s R dropped to 0.56 this week from 0.61 last week.


Also read: Covid immunity lasts for a year, vaccine boost helps fight variants, study says


 

Subscribe to our channels on YouTube & Telegram

Why news media is in crisis & How you can fix it

India needs free, fair, non-hyphenated and questioning journalism even more as it faces multiple crises.

But the news media is in a crisis of its own. There have been brutal layoffs and pay-cuts. The best of journalism is shrinking, yielding to crude prime-time spectacle.

ThePrint has the finest young reporters, columnists and editors working for it. Sustaining journalism of this quality needs smart and thinking people like you to pay for it. Whether you live in India or overseas, you can do it here.

Support Our Journalism

Most Popular

×