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Health Canada concluded the vaccine has an efficacy rate of 66.9 per cent in preventing moderate to severe COVID-19 illness, and has authorized it for use for adults aged 18 and older.

If the AstraZeneca vaccine matches Pfizer’s efficacy, which now appears likely, it could play a leading role in ending the pandemic

The regulator concluded the vaccine has an efficacy rate of 66.9 per cent and has authorized it for use for adults aged 18 and older.

The main purpose of vaccines is to keep people out of the hospital and lower their risk of dying. Even vaccines with lower efficacy against mild and moderate disease, such as Johnson & Johnson’s shot, show better efficacy against severe illness

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Ivermectin is typically used to treat parasitic worms in both people and animals, but scientific evidence for its efficacy against the coronavirus is thin.

Opinion: Despite the recent focus on certain efficacy rates without context, the Johnson & Johnson vaccine is not an inferior shot. It's no less worthy of your arm, and its authorization is a huge public health win for the US

The Johnson & Johnson vaccine shows a 72% efficacy rate in the U.S., falling way short of the rates in Moderna and Pfizer studies, which hover around 95%.

Both the Pfizer and Moderna vaccines require second doses, also known as booster shots for maximum efficacy, but what happens when if a person doesn't take one?

Optimists say inoculation schedules can be changed without harming a vaccine’s efficacy. Pessimists say there isn’t enough evidence to support this bold prediction. Since the optimists appear to have won, @TomWalkom  writes, let’s hope they are right.

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NEW—Interim analysis of Russian#COVID19  #vaccine  phase 3 trial involving nearly 20,000 participants suggests a two-dose regimen has an efficacy of 91.6% against symptomatic #COVID19 . No serious adverse events were deemed to be associated with vaccination.

COVAXIN has demonstrated an interim vaccine efficacy of 81% in its Phase 3 clinical trial. The trials involved 25,800 subjects, the largest ever conducted in India, in partnership with ICMR: Bharat Biotech

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Since you won’t hear about it in American media, this is a great article from Australia about the timeline and efficacy of #hydrochloroquine . It’s worth the read. How many deaths could have been prevented were it not for a rabidly biased media?

BREAKING: Moderna's coronavirus vaccine shows efficacy of 100% against severe coronavirus infections

CDC caught in a lie — studies do not show efficacy of vaccine in previously infected COVID patients.  Vaccines should be prioritized for people who have not yet had COVID. .

Breaking: Novavax Covid vaccine shows 89% efficacy in UK trials. Half the cases on the trial were the new ‘Kent’variant so this is first vaccine to show it is effective against the new more contagious variant

UPDATE: We are proud to announce, along with @BioNTech_Group , that our mRNA-based #vaccine  candidate has, at an interim analysis, demonstrated initial evidence of efficacy against #COVID19  in participants without prior evidence of SARS-CoV-2 infection.

NEW: Inside the White House Situation Room yesterday, economic adviser Peter Navarro got into a heated dispute with infectious disease expert Dr. Anthony Fauci over the efficacy of the antimalarial drug hydroxychloroquine. Details here:

Trump would not let Fauci answer the question about efficacy of hydroxychloroquine.

We absolutely should stop doing active shooter drills in schools. It’s traumatizing and perverse and there’s basically no evidence for their efficacy

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