Vaccinated May turn Super Spreader!
Alarmed by a rise in R0 (rate of transmission) value in many districts, the Odisha government has pressed the pause button on complete unlock in the State. While extending the partial lockdown across the State till August 1, State Chief Secretary Suresh Mahapatra has disclosed something very big.
"As per the case studies conducted in State Capital Bhubaneswar, a significant chunk of fully vaccinated individuals have been detected positive. And the big concern is they can spread the virus to others," Mahapatra cautioned.
Why Point Of Concern?
The observation assumes significance. Because, as per LANCET and NCBI studies, the SARS-CoV-2 can only be transmitted from a person to another when the Ct (cycle threshold) value remains high.
"Laboratory data shows that for SARS-CoV-2, Ct values of 29·3 (steel surface) or 29·5 (plastic surface) correlate with the detection of culturable virus, whereas Ct values of 32·5 (steel surface) or 32·7 (plastic surface) correlate with the detection of non-culturable virus," the Lancet study concludes.
The point of concern, therefore, is vaccinated individuals cannot brace up with the severity of the disease, but they have enough viral load (as suggested by Ct value of 29 or less) to become a super spreader. This heightens the risk of Covid-19 transmission in the State.
Bhubaneswar's Live Lesson
Despite topping the country in the indicator of proportion (24%) of the population fully vaccinated, the city is contributing around 20 per cent of the State burden in new cases and active caseload. The major epidemiological indicators of concern are given below.
The Action