Sick After International Travel?
Illness acquired during international travel is common and can range from traveler's diarrhea to serious tropical infections. Our on-staff infectious disease specialist has over 20 years of experience evaluating and treating returned travelers.
Symptoms That Warrant Evaluation
Fever After Travel
Fever in a returned traveler is a medical urgency, not an emergency in most cases, but always requires prompt evaluation. Malaria, typhoid, dengue, and other serious infections all present with fever.Seek care within 24 hours of onset
Persistent GI Symptoms
Traveler's diarrhea that doesn't resolve, persistent nausea, vomiting, abdominal cramping, or bloody stool can signal bacterial, viral, or parasitic infection requiring specific treatment.Especially if lasting more than 2 weeks Salmonella, Shigella, E coli, and Giardia can all cause ongoing gastrointestinal symptoms.
Rash or Skin Changes
Rash after travel can indicate dengue, Zika, rickettsia, cutaneous leishmaniasis, or other infections. The pattern, timing, and your destinations help narrow the diagnosis significantly.Photograph the rash before it changes
Unexplained Fatigue
Extreme fatigue weeks after returning can indicate chronic parasitic infection, hepatitis, or other conditions acquired abroad that have not yet been identified.Especially with weight loss or night sweats
Jaundice or Eye Changes
Yellowing of the skin or eyes after travel suggests hepatitis A, hepatitis E, leptospirosis, or malaria affecting the liver, all of which require prompt medical attention.Seek care urgently
Possible Insect or Animal Exposure
A bite from an animal (even without visible wounds), tick attachment, or awareness of heavy mosquito exposure warrants evaluation even before symptoms appear, especially for rabies and tick-borne illness.Don't wait for symptoms to develop
Travel-Related Illnesses We Evaluate & Treat
Our on-staff infectious disease specialist has extensive experience with the full spectrum of travel-related illness. Unlike a general practitioner who may rarely see these conditions, our physicians evaluate returned travelers regularly and maintain current knowledge of regional disease patterns, drug resistance, and diagnostic testing.
Malaria
Blood smear and rapid antigen testing, species identification, treatment guided by species and resistance patterns
Typhoid Fever
Culture and serologic testing, antibiotic treatment, household contact guidance
Dengue Fever
Antibody testing, blood count monitoring, and symptom management.
Traveler's Diarrhea
Stool culture and ova & parasite testing, targeted antibiotic or antiparasitic therapy
Parasitic Infections
Giardia, Cryptosporidium, Entamoeba, Strongyloides, Schistosoma, and other intestinal and tissue parasites
Rickettsial Diseases
Tick-borne rickettsia, African tick bite fever, Mediterranean spotted fever, serologic testing and doxycycline treatment
Hepatitis A & E
Serologic testing, supportive management, household and contact guidance
Leptospirosis
Often acquired through water exposure. Serologic testing, antibiotic treatment
Cutaneous Leishmaniasis
Skin lesion evaluation, biopsy if indicated, coordination of specialized treatment
Fever of Unknown Origin (Post-Travel)
Systematic workup including thick and thin blood smears, comprehensive serology, cultures, and imaging as needed
Infectious Disease Expertise, On Staff
Travelers Medical Center has an on-staff board-certified infectious disease physician with over 20 years of experience managing travel-related and tropical illness. This is rare in a travel medicine clinic setting. You will not be referred out for specialist evaluation - we handle it here, with the depth of knowledge your case deserves.
Learn About Our ConsultationsPost-Travel Illness FAQ
How soon after returning should I seek care if I feel sick?
If you have fever, seek care within 24 hours - do not wait to see if it resolves on its own. Malaria and other serious infections can deteriorate rapidly. For other symptoms like diarrhea or fatigue, schedule an appointment promptly rather than waiting weeks. The sooner the cause is identified, the more targeted and effective the treatment.
I took my malaria pills. Can I still get malaria?
Yes, though it is much less likely. No anti-malarial is 100% effective, especially if doses were missed or if you were exposed to drug-resistant strains. If you have fever after travel to a malaria-endemic area, even if you took prophylaxis - malaria must be ruled out with blood testing.
My symptoms started weeks after I returned. Could they still be travel-related?
Absolutely. The incubation periods for travel-related infections vary enormously. Malaria can appear up to a year after exposure (especially P. vivax and P. ovale). Schistosomiasis typically presents 4–6 weeks after exposure. Typhoid fever incubates 1–3 weeks. Always tell your doctor about recent international travel, even if symptoms began weeks or months after returning.
Will my regular doctor know how to evaluate post-travel illness?
General practitioners and urgent care providers are trained to recognize common illnesses but may have limited experience with tropical and travel-related infections, which they see rarely. A travel medicine or infectious disease specialist has specific expertise in the geographic distribution of diseases, local resistance patterns, and specialized diagnostic testing that is not routinely ordered in primary care. For complex post-travel illness, specialist evaluation is strongly recommended.
Don't Wait - Get Evaluated
Returned from travel with symptoms? Call us or book online. Mention your travel history when scheduling.
Book an Appointment Or call directly: 212-982-1600