China's top health official had admitted domestically produced jabs have low rates of protection.
Gao Fu said his country is considering options to boost the effectiveness of doses including mixing different brands.
That's as major side effects from other Covid
have slowed down vaccination drives elsewhere.
The U.S. has recommended 'pausing' the use of the Johnson & Johnson vaccine
following reports of blood clots.
is being investigated by European regulators for similar cases..
And a new Israeli study has found the coronavirus
variant discovered in South Africa can penetrate Pfizer
to some extent.
So, do the coronavirus vaccines
benefits still outweigh the risks?