Covid-19 crisis Breakthrough vaccination
A breakthrough infection occurs when a vaccinated person gets infected with the covid virus. 

The breakthrough may be asymptomatic or symptomatic. The symptomatic case is more serious, but may or may not require hospital treatment. 

In most cases, the breakthrough infection is mild and do not require hospital treatment. 

An explanation is found in this article

https://theconversation.com/what-is-a-breakthrough-infection-6-questions-answered-about-catching-covid-19-after-vaccination-164909  

The medical experts concluded that vaccination help to reduce infection and most of the breakthrough infections are mild. A small proportion may require hospitalization and result in death.

Studies have shown that the mNRA vaccines have 95% efficacy. This meant that it reduces the infection by 95% compared to a group of unvaccinated people.

For example, if the infection rate is 2%, in a population of 10,000 unvaccinated people, 200 will be infected. In a similar population of 10,000 vaccinated people, the infected people will be reduced by 95%, i.e. from 200 to 10.

Tan Kin Lian

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