US health alert over malaria cases in Florida and Texas

Florida and Texas are seeing some locally acquired cases of malaria - the first spread of the mosquito-transmitted disease inside the US in 20 years, officials warn in a health alert.

Active surveillance for more cases is continuing, the Centres for Disease Control says.

The risk of catching malaria in the US remains extremely low, it says.

All five patients - four in Florida, one in Texas - have now had treatment.

Malaria is caused by being bitten by an infected mosquito. People cannot catch it from each other. But...