Eligibility Criteria:  Any traveler, immigrant, or refugee, who has crossed international borders in the previous 1 year and where in the best clinical judgment of the GeoSentinel Network Member, the current illness was acquired as a function of that travel.

GeoSentinel Network Members should contact GeoSentinel with information on any traveler they see or have reasonable knowledge of, presenting with:

	Any unusual diagnosis, unusual clinical manifestation of a usual diagnosis, or unusual geographic origin the Network Member thinks of interest to GeoSentinel
	Falciparum malaria resistant to quinine, mefloquine, or atovaquone/proguanil
	P. vivax, P. ovale, or P. malariae resistant to chloroquine
	Enteric or other bacterial infection with unusual or rarely reported antibiotic resistance

OR any of the following diagnoses:

	Anthrax (cutaneous or pulmonary)
	Botulism
	Chagas Disease, acute
	Cholera
	Dengue Hemorrhagic Fever or Dengue Shock Syndrome
	Ebola virus
	Encephalitis (acute) of any etiology
	Hemorrhagic fever, acute (syndrome) [suspected]
	Influenza, Avian
	Lassa Fever
	Malaria, severe and complicated
	MDR or XDR TB
	Meningococcal meningitis
	Rabies
	Severe acute respiratory syndrome (SARS)
	Smallpox
	Trypanosomiasis, African (T. rhodesiense or T. gambiense)
	Tularemia
	Yellow Fever
	Yersinia pestis, plague or pneumonic

How to Contact GeoSentinel:

	Send an informal e-mail with a very brief description of the diagnosis and circumstances to a specified e-mail address.
	OR
	Fill out an On-line form and submit a very brief description of the diagnosis and circumstances.

GeoSentinel will contact the Network Member if further information required.