China's most used Covid shots effective against Delta variant-study
Gulf Times
The two vaccines were 52% effective against Delta infection and 60% for symptomatic disease, researchers wrote in a peer-reviewed paper.
China's two most widely used Covid-19 vaccines, developed by Sinovac (SVA.O) and Sinopharm, were shown to be effective against the Delta variant of the coronavirus, a study based on real-world data in the country showed on Tuesday.
The two vaccines were 52% effective against Delta infection and 60% for symptomatic disease, researchers wrote in a peer-reviewed paper.
The study did not generate sufficient data to deliver effectiveness readings for the two vaccines separately or by age groups, researchers from a local disease control authority and two Chinese universities said in a paper published in the Annals of Internal Medicine.
The data is based on an analysis of more than 100 infections and more than 10,000 of their close contacts during a Delta outbreak in the southern Chinese province of Guangdong in May and June last year.
