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Real World Evidence for COVID-19 Vaccines

Similar to clinical trials, real world cohort and case-control studies find COVID-19 infections are reduced by >90% with two doses of mRNA vaccines. Single doses of either mRNA or AstraZeneca vaccine decreases infections by ~60% and hospitalizations by 70-80%. Vaccine effectiveness appears similar for variants of concern and are safe for pregnant women. HMC


Extension of Second Dose Intervals for COVID- 19 Vaccines

Ontario government is extending the vaccination dose interval up to 16 weeks for the three two-dose vaccines currently approved by Health Canada (Pfizer-BioNTech, Moderna and AstraZeneca/COVISHIELD). This is based on the recommendation of the National Advisory Committee on Immunization (NACI). Individuals who have already booked their second dose will have their appointments rescheduled. This will...


3 Approved COVID-19 Vaccines Efficacy

Interim results of two large randomized, placebo-controlled trials (RCTs) demonstrate ~95% relative efficacy in preventing COVID-19 (Pfizer, Moderna). The AstraZeneca/Oxford vaccine has ~70% relative efficacy. Absolute benefits will vary with baseline risk and time but if annual risk of developing COVID-19 is 20%, then vaccine would decrease risk to 1% (6% with AstraZeneca/Oxford). These vaccines...


Most parents aware of children’s sun-protection needs

Photo courtesy the American Academy of Dermatology Recently reported findings from a survey by the American Academy of Dermatology (AAD) revealing encouraging news regarding the public attitude toward sun protection. The key finding is that more parents are reporting that protecting their children from the sun is important to them. AAD revealed that some 74% of...