Very positive news on J&J single dose vaccine (although the press release is from the company), but not great news on the Pfizer vaccine, the research suggesting that unless the population gets their third booster shot immunity could essentially be negated over time, resulting in recurring waves.
https://www.jnj.com/positive-new-dat...ty-of-response
https://www.cnn.com/2021/10/06/healt...ity/index.html
“ Pfizer's immunity effectiveness declines steadily, hovering at around 20% after the four-month mark, per the researchers.
"These findings suggest that a large proportion of the vaccinated population could lose its protection against infection in the coming months, perhaps increasing the potential for new epidemic waves," wrote the report.”