BCG is a vaccine that helps the body fight tuberculosis (TB), a serious disease that often attacks the lungs. It is made from a weak cousin of the TB germ, so the body can practise without getting the full illness.

BCG是一種疫苗 is a vaccine that helps the body fight tuberculosis (TB)幫助身體對抗結核病（TB）, a serious disease that often attacks the lungs一種常常侵犯肺部的嚴重疾病。 It它 is made from a weak cousin of the TB germ是用結核菌一個較弱的親戚做成的, so the body can practise without getting the full illness讓身體可以練習對抗，而不會真的生病。

In Taiwan, babies usually get a BCG shot, and many people still have a small round scar on the upper arm from it. It has been used around the world for many decades.

In Taiwan在台灣, babies usually get a BCG shot嬰兒通常會打BCG疫苗, and many people still have a small round scar on the upper arm from it很多人上臂還留著那個小圓疤。 It它 has been used around the world for many decades在世界各地已經用了好幾十年。

Though actually, it is not a perfect shield: it helps a lot against some dangerous forms of TB in children, and rather less against every kind of TB in adults. You will hear BCG in clinics and health class, not in ordinary chat, unless someone is talking about that scar. It is not a shot for a cold, for flu, or for COVID.

Though actually不過事實上, it is not a perfect shield它不是完美的防護：it helps a lot against some dangerous forms of TB in children對兒童的某些危險型結核病幫助很大, and rather less against every kind of TB in adults但對成人各種結核病的幫助就沒那麼大。 You will hear BCG你會在診所和健康課裡聽到BCG, not in ordinary chat而不是日常聊天, unless someone is talking about that scar除非有人在講那個疤。 It它 is not a shot for a cold, for flu, or for COVID不是感冒、流感或COVID的疫苗。