Health regulations may change from time to time. When you apply for your visa at the Pakistan embassy in your country please do check for the latest advice. Yellow Fever vaccination certificate is required for travelers arriving from any epidemic zone. Vaccination against Cholera, hepatitis, typhoid and polio is recommended. Malaria risk exists in Pakistan in areas below 2000m.
You should visit your own doctor and dentist for a check-up prior to taking your trip to Pakistan.