His field of research for several years was finding a live-virus vaccine against yellow fever.

Mail from the tropics, particularly Hawaii, was treated against yellow fever.

Similar mechanisms are probably also effective against yellow fever.

Aspirin is often prescribed against fever, or as an analgesic.

No visa is needed, but you must take precautions against malaria and yellow fever.

For example some countries require proof of vaccination against yellow fever.

It is also advisable to be vaccinated against yellow fever.

In 1854, he implemented another successful quarantine against yellow fever.

He died in 1618 after fighting against malignant fever for about 10 days.

Brazil refused to admit anyone who was not vaccinated against yellow fever.