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Malaysia

Southeast Asia · Asia · Physician brief

📝Draft — pending physician review
📝Draft — pending physician review. This brief was compiled from CDC, WHO, and EKRM/HealthyTravel sources (June 2026) and has not yet been verified by a clinician. Confirm specifics with a travel-medicine professional before relying on it.

Yellow fever entry rule

Malaysia requires a yellow fever vaccination certificate from travelers arriving from (or who have transited through) a country with risk of yellow fever transmission. There is no yellow fever risk within Malaysia itself, and direct travel from Switzerland is not affected.

WHO / Malaysian immigration guidance ↗ · Updated 2026

Malaria

Low

Dengue

High

Yellow fever

None

Chikungunya

Moderate

Vaccines

VaccineRecommendationReference
Routine vaccines

Make sure you are up-to-date on all routine vaccines before every trip — per the Swiss BAG schedule. These include:

BAG Impfplan
Chikungunya

Vaccination indicated during chikungunya outbreaks; may also be considered for countries with elevated risk (see EKRM statement).

—
Dengue

Qdenga® vaccination currently recommended only for travelers with documented prior dengue infection who will be exposed in a region with high dengue transmission.

—
Hepatitis A

Recommended for all travelers to tropical and subtropical countries. Note for Swiss travelers: Hepatitis A is not part of the routine Swiss BAG childhood schedule, so most adult travelers will need vaccination.

CDC Yellow Book
Hepatitis B

Consider per individual risk and stay duration. Routine in the Swiss childhood schedule since 1998 — younger travelers usually covered.

CDC Yellow Book
Japanese encephalitis

Consider for travelers spending a month or more in rural rice-growing or pig-farming areas, or with high-risk rural itineraries (camping, unscreened accommodation). Not needed for typical urban stays.

—
Rabies

Particularly recommended for: long stays; high individual risk regardless of duration (cycling/motorbike trips, hiking in remote areas, infants and children, those working with animals, cavers — bats!). Increased human rabies cases have been reported in Sarawak.

CDC Yellow Book
Typhoid

Recommended for long-term travelers, visiting friends and relatives, those staying in poor hygienic conditions, or with individual risk factors — especially for travel to rural areas.

CDC Yellow Book

Disease-specific guidance

Malaria

Low

Risk is limited to rural, forested areas, and is mainly zoonotic Plasmodium knowlesi transmitted from macaques — most relevant in the interior of Sabah and Sarawak (Borneo). There is no risk in Kuala Lumpur, Penang State, Penang Island, or George Town. Chemoprophylaxis may be discussed for travelers spending significant time in rural, forested areas; bite protection is the priority elsewhere.

Limited risk
Rural, forested areas (esp. Sabah & Sarawak interior)
No risk
Kuala Lumpur, Penang, George Town, urban areas
Species
Mainly zoonotic P. knowlesi (from macaques)
Prevention
Bite protection; prophylaxis for rural forest exposure
Malaria risk areas in Malaysia (CDC).

Yellow fever

None

No yellow fever risk in Malaysia. A vaccination certificate is required only for travelers arriving from, or transiting through, a country with yellow fever transmission risk. Direct travel from Switzerland is not affected.

Dengue

High

Endemic year-round throughout Malaysia, including Kuala Lumpur and all major cities, with peaks during the rainy season. Daytime mosquito-bite prevention is the main protection.

Distribution
Nationwide, all major cities
Season
Year-round; peaks in rainy season
Mosquito
Aedes aegypti — bites during daytime

Chikungunya

Moderate

Transmission occurs with periodic outbreaks across Malaysia. The same daytime Aedes mosquito vector as dengue, so dengue prevention also protects against chikungunya. Vaccination considered in outbreak settings (see EKRM statement).

General prevention

Food & water

Use bottled or filtered water, avoid ice from unverified sources, and pay attention to food hygiene. Standard tropical precautions reduce the risk of traveler's diarrhea, hepatitis A, and typhoid — especially relevant when eating outside major hotels and in rural areas.

Mosquito protection

Dengue circulates year-round across Malaysia including urban areas, so daytime mosquito protection (DEET or picaridin repellent, long sleeves) is essential — including in Kuala Lumpur, Penang, and the cities. For travel into rural, forested areas, especially in Sabah and Sarawak (Borneo), also protect at dawn and dusk for zoonotic malaria and Japanese encephalitis.

Sources

Based on CDC Travelers’ Health, CDC Yellow Book, and the Swiss Federal Vaccination Schedule (BAG). Always verify current recommendations before travel.

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This brief is for informational purposes and does not replace personalized medical advice.
Consult a travel medicine specialist 4–8 weeks before departure.