Two doses of Chinese Covid vaccine Sinopharm produced nothing or only minimally detectable neutralising activity against some Omicron sub-variants, according to a small study published in The Lancet Infectious Diseases journal.A third booster .
Beijing, June 21 (IANS) Two doses of Chinese Covid vaccine Sinopharm produced nothing or only minimally detectable neutralising activity against some Omicron
Here is some welcome news for the developing countries, which don t have cold storage facilities (minus 70-degree C) to store vaccines such as Pfizers.