Travel Infectious Disease Tests Bangkok — Dengue, Typhoid, Malaria, Zika (2026)

Dengue fever is by far the most common tropical disease diagnosis for visitors to Thailand — 150,000+ cases per year, present in all regions, year-round (peak in wet season June–October). After dengue, the next most frequently tested are: typhoid (from food/water), leptospirosis (after flooding), malaria (only relevant for forest/rural border areas — rare in Bangkok itself), and intestinal parasites (Giardia, Strongyloides from contaminated food/water). Chikungunya and scrub typhus are less common but tested when dengue is negative.

For fever with any 'red flag' signs (platelet drop, confusion, severe headache, rash, difficulty breathing, abdominal pain), go to a major private hospital emergency department or the Hospital for Tropical Diseases (Mahidol). For mild fever after travel, a private hospital outpatient department or specialist travel clinic works well. If dengue is a concern, platelet monitoring may require hospital admission — better to start at a hospital than a standalone clinic.

Yes — Bangkok hospitals are fully equipped to treat all tropical diseases including dengue (supportive care: fluids, platelet monitoring), typhoid (ciprofloxacin or azithromycin), malaria (artemisinin-based combination therapy, or chloroquine for P. vivax), leptospirosis (IV penicillin or oral doxycycline), and scrub typhus (doxycycline). Medication costs in Bangkok are 50–80% below US prices. The Hospital for Tropical Diseases (HITAP) is Thailand's national centre of excellence for tropical disease treatment and is worth visiting for complex cases.