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Efficacy of Covid-19 vaccine and why is it different?

The eficacy of a vaccine, and how well the vaccine works, is seen through its ability to protect individuals from the symptoms of disease through vaccination. The efficacy level varies according to ways of clinical studies are conducted, types of vaccines, the risk of the disease in volunteers and various other factors. Although the efficacy level varies, WHO has prescribed that the minimum level of efficacy for Covid-19 vaccine is 50%. All vaccines approved by NPRA are safe an efficacious for use in Malaysia.

Malaysia's Covid-19 Vaccine Policy

The COVID-19 vaccination is voluntary and will be provided free of charge to all those living in Malaysia including non-citizens. The age limit is 18 years and above, this will be evaluated from time to time.

The approach by the Government is to ensure that at least 80% of adult population receive vaccines by February 2022 to reduce infections, hospitalisations and death.

For vaccines that require two doses, each individual will get a vaccine of the same type and the duration of receiving the 2nd dose will depend on the type of vaccine allocated to them. For example, the interval between the 1st and 2nd dose for:

  • the Pfizer & Sputnik V vaccine-21 days;
  • the AstraZeneca vaccine-28 days;
  • the Sinovac vaccine -14 days
Vaccines will be distributed in stages nationally based on supplies and deliveries from vaccine manufacturers.



This website is not an official website for any organization. This website is designed for education purposes only. Please refer to official website for more accurate and latest news regarding Covid- 19. Please overlook any misinformation.

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