Tốt nhất, người lớn dưới 40 tuổi
chủng ngừa thay thế, chẳng hạn
vắc-xin do Pfizer hoặc Moderna.
Do you know that you can update your Covid19 situation using Livenguide and share it with only the people you want?
To do so you can click on the COVID19 button on top right of the screen.
If you are completely healthy or vaccinated, you can share this information if you want.
If you have symptoms of Covid19 or tested positive, your position will become orange on the Livenguide map. But no one knows whose this icon is, so no one knows about you unless you want to share who you are.
We can keep ourselves and the community safe by using this function on Livenguide.
VOA tiếng Việt: Five different vaccines against COVID-19 are in the last phase of testing. They follow three different strategies, including novel approaches. VOA's Steve Baragona has a look at how they aim to work.