What to know

• Four infected employees being treated in hospital; mosquito traps deployed at Frankfurt hub.S1
• Two workers at Frankfurt Airport have died from malaria after being infected by mosquitoes believed to have arrived in Germany on aircraft from malaria-endemic regions, airport operator Fraport and city health authorities said on Wednesday. The first death occ...S2
• It's believed the infected mosquito arrived on a plane before biting the six airport workers.S3