Travel Health Service Year 2025

Current Travel Health News

Take precautions against dengue fever when travelling abroad

Dengue fever is now endemic in more than 100 countries in Africa, the Americas, the Eastern Mediterranean, Southeast Asia and the Western Pacific. This includes various popular tourist destinations for Hong Kong people including the Philippines, Thailand, Indonesia, Malaysia and Singapore.

Detailed information on the latest Dengue fever situation in Hong Kong, as well as neighbouring and overseas countries and areas, can be found at the Centre for Health Protection’s website: https://www.chp.gov.hk/files/pdf/df_imported_cases_and_overseas_figures_eng.pdf

Travellers planning to travel in these areas should take precautions against the disease. Travellers returning from areas where dengue fever is prevalent should seek medical advice as soon as possible if they feel unwell and provide travel details to their doctors.

For more information on dengue fever, including the latest situation in neighbouring and overseas countries and areas, please visit the Centre for Health Protection’s thematic webpage at https://www.chp.gov.hk/en/features/38847.html

Take precautions against Mpox (also known as monkeypox) when travelling abroad

Mpox (also known as monkeypox) is a zoonotic disease caused by Mpox virus. Often found in tropical forest regions of Central and West Africa. It is mainly transmitted by contact with infected animals, human-to-human transmission is limited. Incubation period is mainly from 6 to 13 days, symptoms are similar with Smallpox infection, but less severe.

Since 6 May 2022, multiple outbreaks wer e reported in Europe and North America countries, and many patient are self-identified as bisexual or men who have sex with men. Travellers planning to travel in these areas should avoid contact with infected person. Travellers returning from these areas shall notify the doctor to seek medical treatment and inform the travel situation if feeling unwell.

For more information on Mpox, including the latest situation in overseas countries or places, please visit the World Health Organization and Hong Kong Centre for Health Protection’s thematic webpages at: https://www.who.int/health-topics/monkeypox#tab=tab_1
https://www.chp.gov.hk/en/features/105683.html

USA: Measles [Update]

18 December 2025

Officials with the County of San Luis Obispo, on the Central Coast of California, confirmed a case of Measles in a local child — the first case of measles in SLO County since 2018.

(Source: Outbreak News Today 18 December 2025)

USA: Salmonella [Update]

18 December 2025

The California Department of Public Health reports on an investigation of an outbreak of Salmonella Enteritidis infections linked to the consumption of eggs. As of December 5, 2025, 63 California residents who became ill with the outbreak strain have been reported to CDPH.

(Source: Outbreak News Today 17 December 2025)

Costa Rica: Influenza

18 December 2025

The Costa Rican Institute for Research and Teaching in Nutrition and Health reports the confirmation of the circulation of the influenza A(H3N2) subclade K virus in the country since October 14. To date, seven cases have been identified.

(Source: Outbreak News Today 17 December 2025)

USA: Chikungunya Fever [Update]

18 December 2025

The Florida Department of Health reported 46 travel associated Chikungunya cases during the past week, bringing the total since the beginning of 2025 to 206 travel associated cases.

(Source: Outbreak News Today 17 December 2025)

Peru: Influenza and Measles

18 December 2025

The Peru Ministry of Health has declared a national epidemiological alert as a preventative measure against the potential entry and spread of diseases from other countries, including influenza A (H3N2) subclade K and measles.

(Source: Outbreak News Today 16 December 2025)