This is known as drug prophylaxis.

这就是所谓的药物预防法。

youdao

It can be prevented through anti-mosquito measures and drug prophylaxis.

借由防蚊措施及药物预防可防止其发生。

youdao

Drug prophylaxis is sometimes recommended even for those who have started HAART if they have very weak immune systems or are otherwise considered to be especially vulnerable.

如果已开始鸡尾酒疗法的病人免疫系统较弱，或被认为特别脆弱时，也会推荐他们使用药物预防。

youdao

She started the infant on a three-drug cocktail of antiretroviral medications for HIV treatment, as opposed to the standard two-drug regimen for prophylaxis (prevention) of infection.

WHITEHOUSE: Prevention and Treatment of HIV Infection in Infants Born to Infected Mothers: Need for a Fresh Look | The White House

But Dr. Gay said that based on her own experience, she almost immediately used a three-drug regimen aimed at treatment, not prophylaxis, not even waiting for the test results confirming infection.

FORBES: Was An Infant Cured Of HIV?