Key facts
- As of 18 September 2026, eight cases of Plasmodium falciparum malaria have been reported among six airport workers and two people living near Frankfurt international airport. The cases occurred from early July to early September and none of the individuals reported travel to a malaria-endemic area. Three of the affected individuals have died.
- The cases are consistent with airport-associated malaria. Multiple introductions of infectious mosquitoes are considered likely, while the possible involvement of local Anopheles mosquitoes cannot be excluded.
- Genetic characterisation of P. falciparum parasites detected in the cases suggests three separate introduction events to Frankfurt airport, with likely origin in West Africa.
- The German public health authorities have alerted healthcare professionals to consider malaria in people with unexplained fever and a possible connection to Frankfurt airport or its vicinity, even if they have not travelled to a malaria-endemic area.
- The risk to the general population remains very low.
Overview
As of 18 September 2026, eight cases of Plasmodium falciparum malaria have been reported among people working at or living in the vicinity of Frankfurt international airport. Six cases occurred among airport workers. Five of these individuals developed symptoms in early July and one in mid-August. Two additional cases were subsequently reported among residents of different households living within 5 km of the airport who developed symptoms in early September. None reported travel to a malaria-endemic area.
Three of the eight affected individuals have died, including one of the two residents living near the airport.
The German public health authorities have been conducting epidemiological investigations, mosquito monitoring and genetic characterisation of parasites from patient samples. Genetic characterisation of plasmodia detected in the cases suggest three separate introduction events to Frankfurt airport. Three genetically distinct clusters of infection were identified, each of which could be linked to the infections in July, August and September. The plasmodia within each cluster were genetically closely related, while the three clusters were genetically distinct from one another. The genetic analysis indicates that the P. falciparum parasites likely originated in West Africa.
The authorities have informed airport workers, expanded risk communication to residents living in the vicinity of Frankfurt airport, and alerted healthcare professionals. Clinicians should consider malaria in people with unexplained fever or compatible symptoms who work at or live in the vicinity of Frankfurt airport, even if they have not travelled to a malaria-endemic area. Prompt testing and treatment are important because P. falciparum malaria can rapidly become severe.
ECDC assessment
The absence of recent travel to a malaria-endemic area suggests that these infections were locally acquired in or around Frankfurt airport. Airport malaria occurs when one or more infectious Anopheles mosquitoes are inadvertently transported by aircraft from a malaria-endemic area and subsequently transmit a Plasmodium parasite after arrival.
The geographical and temporal distribution of the cases suggests that multiple introductions of infectious mosquitoes are likely to have occurred. The possible involvement of local Anopheles mosquitoes cannot be excluded at this stage. Epidemiological, entomological and genetic investigations are ongoing to clarify the circumstances of transmission.
Although airport malaria is uncommon, it has been reported sporadically in Europe. A 2024 systematic review identified 105 airport malaria cases reported between 1969 and 2022. Most occurred between June and September, when warmer conditions may favour the survival and activity of imported mosquitoes. Cases may occur individually or in clusters, with clusters of up to six cases previously reported.
P. falciparum malaria can progress rapidly to severe disease and death if diagnosis and treatment are delayed. In airport-associated malaria events, the absence of travel to a malaria-endemic area may reduce clinical suspicion and contribute to delayed diagnosis.
Despite the increase in number of cases reported, the risk to the general population remains very low.