The United States now has the most effective and inexpensive vaccine available, but the virus is still spreading and there’s a lot more work to do.
We asked five experts to weigh in on the future of vaccination, with a focus on whether or not there’s really a danger of going back to the pre-vax era.
The World Health Organization recommends that every child get two doses of the first vaccine, but there’s no evidence that that’s ever been achieved, and most studies haven’t been designed to assess the long-term effects of a two-dose vaccination.
Instead, the World Health Organisation recommends that children get three doses, but research suggests that’s not enough.
In a paper published in March, researchers from the US and Australia showed that the first dose of the vaccine does not protect against the virus, and the second dose may not protect either.
The researchers analysed the data from around 1.5 million children who were vaccinated in Australia in 2006, using a combination of data from the Australian National Immunisation Survey and the Vaccine Safety Datalink.
In total, more than 1.3 million children had their vaccines, and their vaccination rate was about 91 per cent.
But they found that people in the study were at higher risk of catching the virus in the first place if they had received a second dose.
Dr. Mark Hyman, a paediatric infectious diseases expert at Boston Children’s Hospital, told us that the two-fold increase in the number of children vaccinated in the US during the pandemic is probably the most important factor in why people who had received two doses may not have been protected from the virus.
“We know that if you had a higher vaccination rate, the virus could be circulating more, and if you get a higher number of vaccinations, you could get the virus,” he said.
“If you have the second vaccination, it doesn’t seem to be protective, because there is a higher risk for a second vaccination to get the same virus.”
The first dose was so expensive that it could not be covered by insurance and the first-time booster was given to children who had never been vaccinated before.
“You could argue that if a child is vaccinated before they get vaccinated, then it doesn