According to the data, a booster dose of the latest vaccine increased Omicron-fighting antibodies approximately eight-fold, one month after its administration, when compared to the original version.
"We anticipate more durable protection against variants of concern,"
The so-called "bivalent booster" is meant to work against both the original strain of the novel coronavirus and the Omicron variant, which is now dominant in
The study enrolled more than 800 people who have already received three shots, with 377 administered a fourth dose of the original vaccine and 437 the new version, the company said.
The safety and the side effects were consistent with the prior booster dose of the original vaccine, it said.
==Kyodo
© Kyodo News International, Inc., source