Published by the health sciences server medRxiv, their study holds that people vaccinated with Sinopharm have a similar level of protection against infection with Delta and Beta variants.
The scientists administered the Chinese vaccine to 282 people, 95 percent of whom achieved an antibody response against the SARS-CoV-2 'spike' protein.
Meanwhile, Sri Lanka Medical Association president Padma Gunaratne said his country may soon face a fourth COVID-19 wave and warned that movement restrictions have not been very effective in curbing infections.
These restrictions have been gradually relaxed by the authorities. At the moment, only travel between provinces is restricted. As of Tuesday morning, Sri Lanka had reported 286,419 COVID-19 cases and 3,827 related deaths.
Health Service Deputy Director Hemantha Herath said the Delta variant is present in up to 30 percent of new infections detected in the capital. Faced with the increase in cases, the authorities are carrying out a "door-to-door" vaccination campaign using the Sinopharm vaccine.
"We do this for people who cannot physically go to vaccination centers, such as the elderly and people with disabilities," Health Minister spokesperson Mindika Pitawala said.
#FromTheSouth News Bits | Sputnik V vaccine against Covid-19 is around 90% effective against the highly contagious Delta variant of the new coronavirus, according to its developers. | pic.twitter.com/lYP9on5o2B