What information changes the recommendation?
Give the clinician every destination and transit, departure and return dates, nights in each place, accommodation and planned activities. Include visits to relatives, trekking, farm stays, animal encounters and any difficulty reaching medical services. “Thailand for a week” is less useful than a day-by-day route showing what you will actually do.
Start by reviewing routine protection, including your relevant childhood and adult records. Then discuss additional travel risks. Country advice is a starting point, not proof that everyone needs every vaccine listed: a hotel-based city visit and an extended rural trip can lead to different assessments, even within the same country.
Food and water: hepatitis A and typhoid
Hepatitis A can spread through contaminated food or water. Typhoid vaccination may also be considered for travel to endemic areas, particularly longer stays or rural places with limited food and drink choices. Describe how and where you will eat, rather than assuming that choosing a familiar destination removes these risks.
The current Hong Kong THS page identifies injectable unconjugated polysaccharide Typhim Vi as the only locally registered typhoid vaccine. An oral vaccine mentioned on an overseas website is not proof of local availability. Vaccination also does not replace food and water precautions or prevent every cause of travellers’ diarrhoea.
Hepatitis B: review existing protection and relevant exposures
Bring any hepatitis B vaccine and test records. Relevant discussion can include sexual exposure and possible medical procedures involving blood or body fluids. A previous course may change what, if anything, is needed now. Do not assume that travelling to the region means everyone needs a repeat course, or that hepatitis A and B vaccination address the same route of infection.
Rural and night-time exposure: Japanese encephalitis
Japanese encephalitis assessment considers time in endemic areas and the amount of rural outdoor or night-time exposure during the transmission season. THS recommends discussion for stays of a month or more in endemic countries, and for shorter trips with significant relevant outdoor exposure. Describe camping, evening activities and rural accommodation; trip length alone is not a sufficient assessment.
Different Japanese encephalitis vaccines have different age conditions and schedules. The consultation date, final required dose and development of protection may fall on different dates. Ask the clinician which local product and timetable fit your situation instead of relying on a generic “travel jab” deadline.
Animal contact and remoteness: rabies
Tell the clinician about likely animal contact and how quickly you could obtain medical care after a bite or scratch. Pre-exposure rabies vaccination may be relevant to higher-risk activities or remote travel, but it does not remove the need for urgent post-exposure assessment. A vaccinated traveller must still seek immediate care after a potentially rabid animal exposure.
Avoid touching or feeding unfamiliar animals. Ask before departure where you would seek care if exposure occurred. This practical plan matters alongside the vaccine decision, particularly when transport, language or access to treatment could delay help.
What else needs checking before departure?
Malaria prevention needs a separate route-specific assessment, including mosquito precautions and, where appropriate, preventive medicine. A travel-vaccine package is not a complete malaria plan. Check entry requirements separately with destination authorities, taking account of transit and recent travel; a certificate rule is different from a clinical recommendation.
THS recommends booking a travel health consultation at least eight weeks before departure. If you are leaving sooner, enquire promptly with your itinerary and records; an online request is not a confirmed appointment. Tell the clinician about pregnancy, immune problems, medicines and serious allergies so that available options and limitations can be assessed.