MOH recommends that travellers, both adults and children 6 months and older, going to temperate countries in the Northern Hemisphere to protect themselves against the disease with influenza vaccination.

Influenza vaccination is available at the travel clinics in Tan Tock Seng Hospital, National University Hospital, Kandang Kerbau Women's and Children's Hospital and Changi General Hospital, polyclinics and General Practitioners.

Persons who are at higher risk of developing complications from influenza are also advised to get themselves vaccinated against influenza.

Persons who would be at higher risk of developing complications are:

• Persons aged 65 years and older;
• Residents of nursing homes and other chronic care facilities;
• Adults and children who have chronic disorders of the lungs or heart, including asthma;
• Adults and children who have required regular medical follow-up or hospitalization during the preceding year because of chronic metabolic diseases (including diabetes mellitus), kidney or blood disorders, or lowered immunity caused by medications or by the Human Immunodeficiency Virus (HIV);
• Children and teenagers aged 6 months to 18 years who are receiving long-term aspirin therapy;
• Women who are in the second or third trimester of pregnancy.

In general, adults will require a single dose of the vaccine to protect them against influenza for that season.