BENGALURU: The Centre’s advisory to states to increase the interval between the primary and second doses of Covishield vaccine to 12-16 weeks from the sooner 6-8 weeks has left many senior residents confused. Those that took the second dose after six weeks are actually involved about its efficacy.
“We took the second dose in 6-8 weeks however the newest advisory suggesting an interval of 12-16 weeks has left us confused,” stated Sridhar MS, 61, from Bengaluru.
Dr T Jacob John, retired professor and head of scientific virology and microbiology at Christian Medical Faculty, Vellore, stated there isabsolutely no downside if the second dose of Covishield is delayed.
“The safety it presents after a four-week interval is almost 100% in opposition to a extreme type of the illness,” he defined. “However it isn’t 100% in opposition to delicate and reasonable Covid. If you happen to improve the interval as much as 12 weeks, the efficacy in opposition to delicate to reasonable illness will increase.”
Dr John conceded no research has been carried out to check efficacy past a 12-week window. “What is understood to this point with all vaccines is that even should you delay the second dose by a 12 months, the primary dose continues to be efficient. Given the state of affairs, a four-week interval is right. But when there’s a downside with provide, is it higher to delay it so extra folks get the primary dose,” he stated. “If somebody has missed the second dose of Covaxin, it may be taken inside a 12 months as effectively,” he stated.