India

Single Dose Of Covaxin To COVID Infected Equals To 2 Doses For Unaffected: ICMR

New Delhi: Those who have been administered Covaxin have reason to cheer. According to a new Indian Council of Medical Research (ICMR), one dose of Covaxin to a COVID-infected person is equivalent to two doses for unaffected.

The pilot study was undertaken to examine SARS-CoV-2 specific antibody responses after day 0 (baseline before vaccination), day 28A2 days post-first dose (month 1) and day 56A2 days post-first dose (month 2) of BBV152 in a group of healthcare professionals as well as frontline workers.

The antibody responses of individuals with confirmed pre-vaccination SARS-CoV-2 infection were compared with those individuals without prior evidence of infection.

The blood specimens were collected from healthcare professionals and frontline workers who received BBV152 vaccine at vaccination centres in Chennai, India, from February to May 2021.

Blood samples were collected before receiving the first dose of BBV152. Prior infection with SARS-CoV-2 was determined by SARS-CoV-2 IgG positivity at baseline. The study was approved by the Ethics Committee of ICMR-NIRT.

Antibody levels were measured at three-time points: on the day of vaccination (baseline), at month one following the first dose and at month two following the first dose, according to an IANS report.

The results were determined via a calibration curve, an instrument specifically generated by two-point calibration and a master curve provided via the reagent QR code.

Almost all participants with prior COVID-19 infection except two had detectable antibodies at the time of vaccination. This study offers evidence in support of public health-oriented and immunologically sustained vaccine strategies.

Lokesh Sharma, Scientist and Media Coordinator, ICMR, was quoted as saying, “This is a pilot study. If such findings are confirmed in large population studies, a single dose of BBV152 vaccine may be recommended to previously confirmed Covid patients so that the naA-ve individuals could attain the larger benefit of a limited vaccine supply.”

OB Bureau

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