Outbreak of the plague kills 40 in Madagascar

© Thomas Mukoya/Reuters

Madagascar's capital Antananarivo where two cases of the plague have been confirmed.

An outbreak of the plague has killed 40 people out of 119 confirmed cases in Madagascar since late August and there is a risk of the disease spreading rapidly in the capital, the World Health Organisation has said.

So far two cases and one death have been recorded in the capital Antananarivo but those figures could climb quickly due to "the city's high population density and the weakness of the healthcare system," WHO warned.

"The situation is further complicated by the high level of resistance to deltamethrin (an insecticide used to control fleas) that has been observed in the country," it added.

Plague, a bacterial disease, is mainly spread from one rodent to another by fleas. Humans bitten by an infected flea usually develop a bubonic form of plague, which swells the lymph node and can be treated with antibiotics, WHO said.

If the bacteria reach the lungs, the patient develops pneumonia (pneumonic plague), which is transmissible from person to person through infected droplets spread by coughing. It is one of the most deadly infectious diseases and can kill people within 24 hours. Two percent of the cases reported in Madagascar so far have been pneumonic, it added.

The first known case of the plague was a man from Soamahatamana village in the district of Tsiroanomandidy, identified on 31 August. He died on 3 September and authorities notified WHO of the outbreak on 4 November, the agency said.

WHO said it did not recommend any trade or travel restrictions.

The last previously known outbreak of the plague was in Peru in August 2010.