"Nature-Medical": New crown vaccination can protect people who have not been vaccinated

At present, large-scale vaccination of the new crown vaccine is being carried out all over the world

So, as the new crown virus is still spreading in many countries and regions in the world, can "herd immunity" be achieved through vaccination of the new crown virus? A study conducted in Israel published today in the journal Nature-Medical showed that the new crown vaccination not only protects the vaccinated, but also reduces the risk of infection of the new crown virus in the unvaccinated population

Israel is one of the countries with the highest rate of COVID-19 vaccination in the world.

In this study, the researchers analyzed at the group level whether the new crown vaccine can reduce the risk of infection of the new crown virus in unvaccinated individuals

The first category is 16-50 year-old adults.

▲The herd immunity diagram shows that when the population with immunity (yellow) reaches a high enough proportion, the unvaccinated population (blue) can be protected from infection (Image source: Tkarcher, CC BY-SA 4.

The test results show that the increase in the proportion of vaccination among adults aged 16-50 has a strong negative correlation with the positive rate of nucleic acid tests in the unvaccinated population under the age of 16 in the same community

▲There is a negative correlation between the proportion of vaccination among adults aged 16-50 and the positive rate of nucleic acid testing among those under 16 years of age who have not been vaccinated (picture source: reference [1])

The researchers pointed out that this study still has some limitations.

In addition, Israel implemented social distancing measures in January and February of this year.

At the end of the paper, the researchers stated that this observational study showed that high levels of vaccination rates are associated with subsequent low rates of new coronavirus infections in unvaccinated people

Reference materials:

[1] Milman et al.