How the Chinese Sinopharm vaccine responds to the Delta variant of the coronavirus

the 95% of people who received both doses of the Sinopharm coronavirus vaccine developed antibodies, while the answer compared to the Delta variant, first detected in India, was similar to that which develops after a natural infection, according to a recent study conducted in Sri Lanka.

The work, which has not yet been peer reviewed, was published by researchers at Sri Jayewardenepura University (https://www.sjp.ac.lk/news/the-sinopharm-vaccine-induces-robust-antibody-responses-in-individuals-in-sri-lanka / ) they did it the study in collaboration with the Colombo City Council in Sri Lanka and the University of Oxford.

The investigation revealed thats people aged 20 to 39 had high levels of seroconversion (antibody titers) very high (98.9%), although seroconversion rates in people over 60 years (93.3%) are lower.

In addition, the vaccine induced neutralizing antibodies in 81.25% of the recipients and these levels of neutralizing antibodies were similar to the levels observed after natural infection.

As stated in the university’s statement, antibody levels against Delta and Beta (first detected in South Africa) “were similar to levels after natural infection, although antibody levels were lower for Alpha (first detected in UK) “.

And he added that ” Vaccine recipients only had a 1.38-fold reduction in antibody titers to Delta compared to the Wuhan variant, compared to a 10-fold reduction compared to Beta. “

The vaccine also induced responses of memory T cells and B cells.