Don't Count On Needing A Covid Booster Shot, Says WHO Scientist

"We do not have the information that's necessary to make the recommendation on whether or not a booster will be needed," Soumya Swaminathan, the World Health Organization's chief scientist, said.

As some governments and pharmaceutical officials prepare for Covid booster shots targeting more-infectious virus variants, health authorities say it's too early to tell if they will be required. "We do not have the information that's necessary to make the recommendation on whether or not a booster will be needed," Soumya Swaminathan, the World Health Organization's chief scientist, said in a Zoom interview Friday. The "science is still evolving." Such a call is "premature" while high-risk individuals in most of the world haven't yet completed a first course of vaccination, Swaminathan said. Data from countries introducing precautionary extra inoculations later this year -- particularly for vulnerable people whose immunity to SARS-CoV-2 may wane faster -- will inform WHO's guidance, she said. Covid booster shots are likely to be rolled out in U.K. in the fall to avoid another winter surge. Seven different vaccines are being tested in volunteers in England in the world's first booster study, Health Secretary Matt Hancock said last month.