There is a bunch of British studies on mix and matching and the interval between shots having a significant impact. You may recall the Brits went with a one for all then second shot a lot later approach.
So do tell... what is the record. Oh... the entire f@cking country of Australia hit 1700 daily cases. What a shame. Many freaking counties in the U.S. with much lower populations that the entire f@cking country of Australia have been having more daily cases than this for months. While you are at it tell us how the number of Covid deaths per capita is doing in Australia compared to the U.S.
I agree the number is small, to small to shut down a country... Its the trend that is the problem When a politician makes a decision to shut down and take away liberties, and problem gets worst, that power needs to be reviewed
Despite a small number of loud lockdown protestors in Australia --- the majority of the population in the country supports the country's "Zero Covid" policy with mitigations and restrictions when Covid appears. You should note that over time Australia has had much less time with restrictions or lockdowns in place than most other countries including the U.S.
Colombia went with extending vaccine dose gap to 12 weeks (though elderly / high risk were done on a 3 week basis) and the decoupling of infections and deaths is remarkable. Of course 100 percent masking is still in force as as well. This has had a huge benefit, just wear a mask in public, no off-on confusion for kids and forgetful. Extending Time Between Covid-19 Vaccine Doses Affords Benefits https://www.minsalud.gov.co/English...-Covid-19-Vaccine-Doses-Affords-Benefits.aspx
Coronavirus: Pfizer booster may better protect than third CoronaVac shot, finds Turkish study Researchers at Manisa Celal Bayar University studied several hundred health workers vaccinated with CoronaVac, with boosters beginning in July China began rolling out Covid-19 boosters in several provinces this month and overseas countries are supplementing the CoronaVac regimen with other vaccines https://www.scmp.com/news/china/sci...er-booster-may-better-protect-third-coronavac (More at above url)
AstraZeneca says its COVID-19 vaccine was 74 percent effective in US testing https://thehill.com/policy/healthca...neca-says-its-covid-19-vaccine-was-74-percent British drugmaker AstraZeneca's COVID-19 vaccine Vaxzevria has been found to have a 74 percent efficacy in preventing symptomatic disease, according to a report published Wednesday in the New England Journal of Medicine. The report, which studied more than 26,000 volunteers in the United States, Chile and Peru, also found the vaccine had an 83.5 percent efficacy rate in people ages 65 and older. The AstraZeneca vaccine has not been approved for use in the United States, though it has been exported from the U.S. for use abroad. Vaxzevria is currently authorized in more than 170 countries, with the company seeking U.S. approval later this year. In July, AstraZeneca looked to get U.S. approval from the Food and Drug Administration rather than receive emergency authorization, according to The Associated Press. The 74 percent efficacy rate was lower than the initial 79 percent reported by AstraZeneca in March, which was later revised to 76 percent after health officials said the figure was based on "outdated information." There were no severe or critical symptomatic cases of COVID-19 in the more than 17,600 participants who tested positive, compared with eight severe cases among the 8,500 volunteers who received the placebo. The placebo also saw two deaths, but not among those who received the vaccine. "I was pleasantly surprised," Anna Durbin, a vaccine researcher at Johns Hopkins University and one of the study's investigators, told Reuters. "It was also highly protective against severe disease and hospitalization." While blood clots were one of the first serious side effects of the vaccine, there were no cases of them in the study group. The company is still exploring the need for booster doses on those who have already been vaccinated from either its own shot or other mRNA-based vaccines like Pfizer and Moderna, Reuters noted.
Large evaluation of mRNA vaccines show a breakthrough rate of a mere 0.5% of the vaccinated. 0.5 per cent of those vaccinated with Moderna or Pfizer were infected with Covid-19 https://www.straitstimes.com/singap...th-moderna-or-pfizer-were-infected-with-covid