waning

AstraZeneca forecast higher 2022 sales and raised its annual dividend for the first time in a decade on Thursday (Feb 10) after beating fourth-quarter profit expectations, but warned the boost from its COVID-19 products would fall. The…

Protection provided by COVID-19 vaccines against infection by the novel coronavirus has waned dramatically since the highly infectious Omicron variant started spreading across Ontario, according to data from the province's Science Advisory…

As widely-anticipated decisions about COVID-19 vaccine boosters roll out from U.S. agencies today, insights from an independent study underscore why boosters are important for all adults. Antibody levels after receiving the Pfizer-BioNTech…

Tiny particles of gold could be the new weapon in the fight against bacterial antibiotic resistance, according to research just published. Scientists have been investigating the use of gold nanoclusters -- each made up of about 25 atoms of…

This is an excerpt from Second Opinion, a weekly roundup of health and medical science news emailed to subscribers every Saturday morning. If you haven't subscribed yet, you can do that by clicking here. Canadians concerned over waning…

The idea of waning immunity has picked up steam in recent weeks, with some countries using it to justify rolling out third-dose COVID-19 vaccine boosters to their populations. But immunologists say the concept has been largely…

The idea of waning immunity has picked up steam in recent weeks, with some countries using it to justify rolling out third-dose COVID-19 vaccine boosters to their populations. But immunologists say the concept has been largely…

The Centers for Disease Control and Prevention released data on Friday indicating that the level of protection against Covid hospitalizations afforded by the Pfizer-BioNTech vaccine dropped significantly in the four months after full…

Islamic State militants fired a volley of rockets at Kabul's rapidly emptying international airport on Monday, with just hours left before a deadline for U.S. forces to withdraw at the end of America's longest war. The Pentagon is…

As it turns out, the two groups were different. The first Israelis to have received the vaccine tended to be more affluent and educated. By coincidence, these same groups later were among the first exposed to the Delta variant, perhaps…