TOKYO -- Japanese drugmakers Shionogi and Daiichi Sankyo look to ensure that their vaccines under development will be effective against the new omicron variant of the coronavirus.
COVID vaccines
Shionogi and Daiichi Sankyo join hunt for omicron vaccine
Japanese drugmakers prepare to modify shots under development
Vaccine makers worldwide are scrambling to develop inoculations against the new omicron coronavirus variant. © Reuters
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