Travellers on scheduled airlines whose flights have originated outside areas regarded as infected but have passed through such areas in transit are not required to possess a certificate, provided they have remained at the scheduled airport or in the adjacent town during transit. All passengers with unscheduled airlines whose flights originated or passed in transit through an infected area are required to possess a certificate. The certificate is not insisted upon in the case of children under one year of age, but such infants may be subject to surveillance. The predominant falciparum strain is reported to be resistant to chloroquine. The recommended prophylaxis is chloroquine plus proguanil.
Bottled water is available and is advised for the first few weeks of the stay.
Drinking water outside main cities and towns may be contaminated and sterilisation is advisable. Milk is pasteurised and dairy products are safe for consumption. Local meat, poultry, seafood, fruit and vegetables are generally considered safe to eat. Natural foci of plague have been reported in Namibia. Hepatitis A and B are hyperendemic.