WHO sounds alarm on risk of chikungunya epidemic

In Europe, imported cases have also been reported, linked with the outbreak in the Indian Ocean islands. Local transmission has been reported in France, and suspected cases detected in Italy.

“Because these patterns of transmission were seen in the outbreak from 2004 onwards, WHO is calling for urgent action to prevent history from repeating itself,” said Rojas Alvarez.

She noted that the case fatality rate was less than one percent, “but when you start counting millions of cases, that one percent can be thousands” of deaths.

“We are raising the alarm early so countries can prepare early, detect and strengthen all the capacities to avoid going through very large outbreaks.”

– Tiger mosquitos –

Rojas Alvarez explained that in regions where populations have little or no immunity, the virus can quickly cause significant epidemics, affecting up to three-quarters of the population.

Chikungunya virus is transmitted to humans by the bites of infected female mosquitoes, most commonly Aedes aegypti and Aedes albopictus mosquitoes.

The latter, which is known as the tiger mosquito, is venturing farther north as the world warms because of human-driven climate change.

They bite primarily during daylight hours, with peak activity often in the early morning and late afternoon.

The WHO urged people to protect themselves through measures like using mosquito repellent and not leaving water to stagnate in containers such as buckets, where mosquitoes can breed.