Malaria in Austria 1990-2000.

In Austria, between 1990 and 2000, 924 travel related malaria cases were reported (mean = 84/year). No significant decreasing or increasing trends were observed. P. falciparum (n=517; 55.9%) accounted for the highest number of cases followed by P. vivax or ovale (n=321; 34.7%) and P. malariae (n=29; 2.2%). Most infections were contracted in highly endemic malaria regions (n=686; 74.2%) and most cases were reported from the largest counties: Vienna (n=336, 36.4%), Styria (n=156, 16.8%), and Lower Austria (n=151, 16.3%). Overall, 12 deaths occurred, most were caused by P. falciparum (n=9, 75%; case fatality rate: 1.9%). Data on chemoprophylaxis was available for 752 cases (81.4%) but only half of them (n=367, 48.8%) gave detailed information on the drug used. Data on compliance were obtained for only 45.4% of the cases, with only about 60% of patients completing the full course of prophylaxis.