There are also a few laboratory studies that suggest the Moderna COVID-19 vaccine is effective against the Delta variant. A Canadian study that found the Pfizer vaccine to be 87% effective against the Delta variant also found that the Moderna vaccine was 72% effective against the variant after one dose.Is Pfizer's mRNA vaccine less effective against Delta than Moderna's?
The mRNA vaccine from Pfizer and BioNTech may be less effective than Moderna’s against the delta variant of the coronavirus, according to two reports posted on medRxiv on Sunday ahead of peer review.What is the effectiveness of the delta variant in 2021?
During June–July 2021, when B.1.617.2 (Delta) variant circulation predominated, effectiveness declined significantly to 53.1%. What are the implications for public health practice?How effective is the Johnson & Johnson vaccine against the delta variant?
There is little data out there showing how effective the Johnson & Johnson vaccine is against the Delta variant, although the company is supposedly researching whether a second shot could increase immunity against the Delta variant and other variants of concern.