Serbia
degree of risk: intermediate
food or waterborne diseases: bacterial diarrhea
vectorborne disease: Crimean Congo hemorrhagic fever
note: highly pathogenic H5N1 avian influenza has been identified in
this country; it poses a negligible risk with extremely rare cases
possible among US citizens who have close contact with birds (2009)

Sierra Leone
degree of risk: very high
food or waterborne diseases: bacterial and protozoal diarrhea,
hepatitis A, and typhoid fever
vectorborne diseases: malaria and yellow fever
water contact disease: schistosomiasis
aerosolized dust or soil contact disease: Lassa fever (2009)

Somalia
degree of risk: high
food or waterborne diseases: bacterial and protozoal diarrhea,
hepatitis A and E, and typhoid fever
vectorborne diseases: dengue fever, malaria, and Rift Valley fever
water contact disease: schistosomiasis
animal contact disease: rabies (2009)

South Africa
degree of risk: intermediate
food or waterborne diseases: bacterial diarrhea, hepatitis A, and
typhoid fever
water contact disease: schistosomiasis (2009)

Sri Lanka
degree of risk: high
food or waterborne diseases: bacterial diarrhea and hepatitis A
vectorborne disease: dengue fever and chikungunya
water contact disease: leptospirosis
animal contact disease: rabies (2009)

Sudan
degree of risk: very high
food or waterborne diseases: bacterial and protozoal diarrhea,
hepatitis A and E, and typhoid fever
vectorborne diseases: malaria, dengue fever, African trypanosomiasis
(sleeping sickness)
water contact disease: schistosomiasis
respiratory disease: meningococcal meningitis
animal contact disease: rabies
note: highly pathogenic H5N1 avian influenza has been identified in
this country; it poses a negligible risk with extremely rare cases
possible among US citizens who have close contact with birds (2009)

Suriname
degree of risk: high
food or waterborne diseases: bacterial and protozoal diarrhea,
hepatitis A, and typhoid fever
vectorborne disease: dengue fever, Mayaro virus, and malaria
water contact disease: leptospirosis (2009)

Swaziland
degree of risk: high
food or waterborne diseases: bacterial diarrhea, hepatitis A, and
typhoid fever
vectorborne disease: malaria
water contact disease: schistosomiasis (2009)

Tajikistan
degree of risk: high
food or waterborne diseases: bacterial diarrhea, hepatitis A, and
typhoid fever
vectorborne disease: malaria (2009)

Tanzania
degree of risk: very high
food or waterborne diseases: bacterial diarrhea, hepatitis A, and
typhoid fever
vectorborne diseases: malaria and plague
water contact disease: schistosomiasis
animal contact disease: rabies (2009)