When will 2nd vaccine doses be given @ 21-28 days due to very low efficacy of 1st dose against UK and Indian variant?

DealsinThe6ix wrote: ↑ Thanks for the link!

But I think England is using the recommended interval of 21 days for Pfizer and 4weeks to 8weeks for Astrazeneca, and these numbers are for vaccine effectivness against hospitalization.

What about after vaccine effectiveness against symptomatic disease after 8weeks or more after 1st dose, which is what Canada is doing, at least for mRNA vaccines?

We know after 1 dose for Pfizer, it's 33% effectiveness against symptomatic disease for delta variant, and 2nd dose 21 days after 1st dose, effectiveness is 88%, but this is not the reality in Canada. The reality is 8weeks or more after 1st dose.

I think we all need clarity for mRNA effectiveness against symptomatic disease 8 weeks or more after 1st dose against this delta variant.

• Vaccine efficacy (VE) against SARS-CoV-2 infection regardless of its severity and after adjustment for certain variables (week of onset of symptoms or of the test, age, sex, type of facility, type of (employment and health region) was 70.9% 14 or more days after a single dose of vaccine and 86.9% 7 or more days after two doses.
• VE against symptomatic COVID-19 infection increased to 73.4% after one dose and to 94.2% after 2 doses.
• The VE against hospitalization was 97.9% after a single dose and no cases were hospitalized after two doses.
• VE against COVID-19 remained relatively stable during the period between 2 and 16 weeks after the first dose.
• The VE against COVID-19 was approximately 15% lower for the variants of concern (90% of which are alpha (B1.1.7) variants) than for all other SARS-CoV-2. VE against variants of concern did not appear to decrease over time.
• In conclusion, a single dose of mRNA vaccine was associated with a three-quarter reduction in the risk of COVID-19 among healthcare workers and a greater than 95% reduction in their risk of hospitalization.

CuriousJack wrote: ↑ They said the shipment for pfizer vaccine is mid-week this week. I assume, Wednesday (yesterday).

Hope someone can confirm here if they got pfizer today (GTA Area). I have an appointment in the afternoon and thinking of cancelling in advance if Moderna is still the vaccine of choice.

Thanks.

Swerny wrote: ↑ you've asked this in 5 separate threads.

Why?