How long is the incubation period/onset of symptoms?
The incubation period in malaria covers the time between infection and the first appearance of clinical signs, of which fever is the most common. The length of the incubation period is usually between 9 and 30 days, depending on the infecting species (shortest for P.falciparum, longer for P.malariae). In some strains of P.vivax (P.v.hibernans) the incubation period may last some 8-9 months. falciparum malaria, which can be fatal, must always be suspected if fever, with or without other symptoms, develops at any time between one week after the first possible exposure to malaria and two months (or even longer in exceptional cases) after the last possible exposure.
