Singapore PM Lee Hsien Loong test positive for COVID-19

Lee, 71, said due to his age, doctors prescribed him the antiviral medication Paxlovid, adding that his most recent COVID-19 vaccine booster was in November.

PTI

May 22, 2023 / 20:34 IST

Singapore's Prime Minister Lee Hsien Loong

Singapore, May 22 Singapores Prime Minister Lee Hsien Loong said on Monday that he tested positive for COVID-19 after recent visits to South Africa and Kenya.

I tested positive for COVID-19 for the first time this morning, Lee said in a Facebook post.

This comes after my recent work trips. I am generally feeling ok but my doctors have advised me to self-isolate until I am asymptomatic," he added.

Lee, 71, said due to his age, doctors prescribed him the antiviral medication Paxlovid, adding that his most recent COVID-19 vaccine booster was in November.

Please continue to keep your vaccinations up-to-date, as it reduces the risk of severe illness, he wrote.

COVID-19 Vaccine

Frequently Asked Questions

How does a vaccine work?

A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.

How many types of vaccines are there?

There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.

What does it take to develop a vaccine of this kind?

Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.

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