Israel and the UK have seen a rise in cases, but neither got the sharp increase in deaths seen in places that have been slower to roll out vaccines.
Some experts, fearing Delta, are having Pfizer booster shots after J&J's one-dose vaccine. "We shouldn't wait" for official recommendations, one said.
The variant is more transmissible and is not completely stopped by vaccines. Still, data confirmed that inoculation offers significant protection.
State and territory health authorities are on high alert after cases of COVID-19 were detected in the Northern Territory, Perth, and Brisbane. Darwin is entering its first full day of lockdown over fears of transmission at a mine site, while new mask mandates are in effect for Perth, Brisbane, the […]
Disease experts say there's no reason to believe that the Delta variant causes more severe outcomes in children than other strains.
With a fast vaccine rollout, Israel had thought it was freed of the coronavirus. Then the Delta variant came.
Indian health officials said there were 40 cases of "Delta Plus," which is the Delta variant with an extra mutation, among 45,000 sequenced tests.
The variant is more transmissible and appears to cause more serious disease. Vaccines remain effective, though less so than with earlier variants.
Soumya Swaminathan, WHO chief scientist, said "we don't have the information that's necessary to make the recommendation" on COVID-19 booster shots.
Dr. Anthony Fauci urged Americans to get their second shot to stop the highly infectious Delta variant that is linked to COVID-19 infection surges.
Antibodies are one aspect of the immune response. It's not clear how well Pfizer's vaccine works against the Delta variant from India in real-life.
Moderna just released data showing its COVID-19 vaccine was still highly effective six months after administration.
The study suggests that the Pfizer vaccine is less effective against two variants, though both were quite rare in Israel. It has yet to be peer reviewed.
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Gregory Armstrong, of the CDC, told Bloomberg 585 cases of the variant first found in New York have emerged in the US in the past two weeks.
Moderna shipped a new version of its coronavirus vaccine to the NIH so that it could be tested in people.