| Country | Major infectious diseases |
| Kosovo | void |
| Kuwait | void |
| Kyrgyzstan | void |
| Laos | degree of risk: very high food or waterborne diseases: bacterial and protozoal diarrhea, hepatitis A, and typhoid fever vectorborne diseases: dengue fever, Japanese encephalitis, and malaria 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 (2008) |
| Latvia | degree of risk: intermediate food or waterborne diseases: bacterial diarrhea and hepatitis A vectorborne diseases: tickborne encephalitis (2008) |
| Lebanon | void |
| Lesotho | void |
| Liberia | 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 animal contact disease: rabies (2008) |
| Libya | void |
| Liechtenstein | void |
| Lithuania | degree of risk: intermediate food or waterborne diseases: bacterial diarrhea and hepatitis A vectorborne diseases: tickborne encephalitis (2008) |
| Luxembourg | void |
| Macau | void |
| Macedonia | void |
| Madagascar | degree of risk: very high food or waterborne diseases: bacterial and protozoal diarrhea, hepatitis A, and typhoid fever vectorborne diseases: chikungunya, malaria, and plague water contact disease: schistosomiasis (2008) |
| Malawi | degree of risk: very high food or waterborne diseases: bacterial and protozoal diarrhea, hepatitis A, and typhoid fever vectorborne diseases: malaria and plague water contact disease: schistosomiasis (2008) |
| Malaysia | degree of risk: high food or waterborne diseases: bacterial diarrhea, hepatitis A, and typhoid fever vectorborne diseases: dengue fever and malaria 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 (2008) |
| Maldives | void |
| Mali | degree of risk: very high food or waterborne diseases: bacterial and protozoal diarrhea, hepatitis A, and typhoid fever vectorborne disease: malaria water contact disease: schistosomiasis respiratory disease: meningococcal meningitis (2008) |
| Malta | void |
| Marshall Islands | void |
| Mauritania | degree of risk: high food or waterborne diseases: bacterial and protozoal diarrhea, hepatitis A, and typhoid fever vectorborne diseases: malaria and Rift Valley fever (2008) |
| Mauritius | void |
| Mayotte | void |
| Mexico | degree of risk: intermediate food or waterborne diseases: bacterial diarrhea, hepatitis A, and typhoid fever vectorborne disease: dengue fever water contact disease: leptospirosis (2008) |
| Micronesia, Federated States of | void |
| Moldova | void |
| Monaco | void |
| Mongolia | void |
| Montenegro | degree of risk: intermediate food or waterborne diseases: bacterial diarrhea and hepatitis A vectorborne disease: Crimean Congo hemorrhagic fever (2008) |
| Montserrat | void |
| Morocco | void |
| Mozambique | degree of risk: very high food or waterborne diseases: bacterial and protozoal diarrhea, hepatitis A, and typhoid fever vectorborne diseases: malaria and plague water contact disease: schistosomiasis (2008) |
| Namibia | degree of risk: high food or waterborne diseases: bacterial diarrhea, hepatitis A, and typhoid fever vectorborne disease: malaria water contact disease: schistosomiasis (2008) |