Table 1 Data collected

Demographic data

Age; sex; place of birth; place of residence; last endemic zone visited; dates of travel (relevant for native-traveler and traveler); date of arrival to non endemic zone for malaria (native and native-traveler); date of arrival to endemic zone for malaria (resident in endemic zone); intake of antimalarial chemoprophylaxis (yes/no and drug); adherence to antimalarial chemoprophylaxis (correct vs incorrect).

Clinical data

Presence of symptoms (yes/no); date of onset of symptoms; liver enlargement, spleen enlargement, asthenia, headache, ocular pain, arthromyalgias, vomiting, diarrhea, rash, cough, abdominal pain, jaundice, fever, seizures, hemorrhage, shock.

Laboratory data

Hemoglobin (g/dl); white blood cells (cell/mm³); lymphocytes (cell/mm³) ; monocytes (cell/mm³); platelets (cell/mm³); glycaemia (mg/dl); urea (mg/dl); creatinine (mg/dl); lactic deshydrogenase enzyme –LDH- (UI/ml); alanin aminotransferase enzyme -ALT- (UI/ml); total cholesterol (mg/dl).