AstraZeneca vaccine ‘ineffective’ if B.1.351 (South Africa) variant not contained in Phl — expert

MANILA, Philippines — An expert from the UP-OCTA Research on Wednesday warned that AstraZeneca vaccine offers very little protection in fighting off the coronavirus disease (COVID-19).
In a virtual press briefing, Fr. Nicanor Austriaco, a fellow at the UP-OCTA Research, presented studies showing that the South Africa variant lowers the efficacy of several COVID-19 vaccines.
He particularly mentioned the United Kingdom-based AstraZeneca, saying B.1.351 variant significantly decreases the vaccine’s efficacy from 70% to mere 10%.
“Basically, South Africa decided to abandon the AstraZeneca vaccine. It was no different than injecting water into the patients. With 10% protection, basically, most people would still be able to get mild and moderate COVID-19,” Austriaco said.
Austriaco underscored how imperative it is to eliminate the B.1.351 variant as it could be a potential stumbling block to the country’s goal of achieving herd immunity.
“The B1.351 variant can resist the AstraZeneca vaccine. If we do not eliminate the B1.351 variant in the Philippines…the 17 million doses of AstraZeneca that we have already bought but have not yet arrived will be ineffective against fighting this particular variant from South Africa,” he said.
“If it is not controlled, if it is not eliminated from the islands, [it will be] more difficult for us to vaccinate the 75 million Filipinos in order to acquire herd immunity,” he added.
Austriaco also said that, with AstraZeneca vaccine, there is still a need for a third shot to boost the two doses that will be given to the vaccinees to ensure that they are protected from the said variant.
“We would need three doses of the remaining vaccines because you would need one booster shot just for the B.1.351 variant,” he said.
The Philippines is expected to receive an initial 487,200 doses of the AstraZeneca vaccine on Thursday from the WHO-COVAX facility. Local government units and private companies have also procured around 17 million doses through tripartite agreements.
Recent findings showed that the Philippines has recorded six cases of the South Africa variant. —/mbmf (with details from Aiko Miguel)