HK at risk of further imported cases of chikungunya

Staff members, deployed by Hong Kong’s Food and Environmental Hygiene Department, conducts fogging treatments at On Tat Estate in Kwun Tong, on Aug 4, 2025, following the city’s first recorded imported case of chikungunya fever.(ADAM LAM / CHINA DAILY)

HONG KONG – A government scientific committee has cautioned that Hong Kong faces a high risk of further imported cases of chikungunya fever, leading to the potential risk of local transmission.

The warning came on Monday when the Centre for Health Protection’s Scientific Committee on Vector-borne Diseases met to review epidemiological data and prevention and control strategies for chikungunya fever in the city following to recent spike in chikungunya fever cases in multiple regions worldwide.

Hong Kong recently logged its first imported case of chikungunya fever this year, involving a 12-year-old boy who had travelled to Foshan city in Guangdong.

READ MORE: HK sees first case of chikungunya fever since 2019

During Monday’s review meeting, the committee explained that mosquito infestations are likely to be aggravated in Hong Kong due to the high summer temperatures and rainfall. Besides, people travel more frequently during summer holidays to regions where mosquito-borne diseases are endemic, it added.

The special administrative region government has rolled out preventive and control measures against chikungunya fever, the committee said, endorsing the measures in a consensus statement.

Affirming that Hong Kong’s multi-pronged approach to emergency preparedness has effectively prevented local chikungunya fever transmission to date, it said sustained implementation of the measures is crucial to address importation risks.

EXPLAINER: What is chikungunya fever?

The measures include surveillance of the situation globally and in the neighboring regions, enhancing local testing capabilities, and strengthening vector surveillance and mosquito control.

The committee also agreed that prompt epidemiological investigations and vector surveys are useful.

Regarding port health measures and travel advice, the committee said it shared the government’s view that inspections at boundary control points should be maintained, and that health education for outgoing and returning travelers should be strengthened.

READ MORE: Greater Bay Area in joint fight against chikungunya fever

Information on chikungunya fever should be provided through various channels, and the effectiveness of vaccines for the fever should be monitored, it added.

Continue Reading