Risk is present in the country; areas of risk are specified:
Pacific Coast: Sonora, Chihuahua, Sinaloa, Durango, and Nayarit. Follow suppressive medication guidelines in these areas. Risk is also present in Jalisco, where travellers should take meticulous anti-mosquito bite measures.
Southern Mexico: Chiapas, Tabasco, and Campeche. Follow suppressive medication guidelines in these areas. Take meticulous anti-mosquito bite measures in Quintana Roo (the forested areas bordering Belize and Guatemala) and Oaxaca, where risk is also present.
Archaeological sites: Daytime excursions from cities to popular archeological sites do not require antimalarial medication. However, travellers staying for more than 48 hours in the vicinity or in nearby villages of the following sites should take one of the antimalarial medications listed below.
Note: Travellers to rural areas including resorts along both coasts should take meticulous anti-mosquito bite measures from dusk to dawn.
Malaria risk is present below the altitude of : 1000 meters
Malaria transmission vector(s): A.albimanus, A.darlingi, A.pseudopunctipennis
Incidence of Plasmodium falciparum Malaria: 0%
Of the five species of human malaria parasites, Plasmodium falciparum is the most dangerous. The remaining percentage represents malaria infections that may be caused by one or more of the following parasites: Plasmodium vivax, Plasmodium ovale, Plasmodium malariae, and Plasmodium knowlesi.
All malaria infections are serious illnesses and must be treated as a medical emergency. In offering guidance on the choice of antimalarial drugs, the main concern is to provide protection against Plasmodium falciparum malaria, the most dangerous and often fatal form of the illness.
Regardless of the medication which has been taken, it is of utmost importance for travellers and their physician to consider fever and flu-like symptoms appearing 7 days up to several months after leaving a malarious area as a malaria breakthrough. Early diagnosis is essential for successful treatment.
In addition to the suggested antimalarial medication, use a mosquito bed net and effective repellents to avoid the bite of the nocturnal Anopheles mosquito.
TAKE IN WEEKLY DOSES OF 500 mg (300 mg base).
START 1 WEEK BEFORE ENTERING MALARIOUS AREA, CONTINUE WEEKLY DURING YOUR STAY AND CONTINUE FOR 4 WEEKS AFTER LEAVING. TAKE IT AFTER A MEAL TO AVOID STOMACH UPSETS.
Note: The bitter taste makes the drug unpalatable. Minor stomach upsets, itching skin, nausea and diarrhea may occur. It may also cause blurred vision and a transitory headache.
TAKE IN WEEKLY DOSES OF 400 mg (310 mg base).
START 1 WEEK BEFORE ENTERING MALARIOUS AREA, CONTINUE WEEKLY DURING YOUR STAY AND CONTINUE FOR 4 WEEKS AFTER LEAVING.
Note: An alternative to chloroquine that may be better tolerated.
Brand names: Malarone, Malanil and others; generics available.
TAKE 1 TABLET DAILY (ATOVAQUONE 250 mg + PROGUANIL 100 mg).
START 1-2 DAYS BEFORE ENTERING THE MALARIOUS AREA, CONTINUE DAILY DURING YOUR STAY AND CONTINUE FOR 7 DAYS AFTER LEAVING.
Note: Take at the same time every day with food or milk.
Brand names: Vibramycin and others; generics available.
TAKE 1 TABLET DAILY (100 mg).
START 1 DAY BEFORE ENTERING MALARIOUS AREA, CONTINUE DAILY DURING YOUR STAY AND CONTINUE FOR 4 WEEKS AFTER LEAVING.
Note: When taking this drug, avoid exposure to direct sunlight and use sunscreen with protection against long range ultraviolet radiation (UVA) to minimize risk of photosensitive reaction. Take with large amounts of water to prevent esophageal and stomach irritation.
Brand names: Lariam, Mephaquin, Mefliam and others; generics available.
TAKE 1 TABLET OF 250 mg (228 mg base) ONCE A WEEK.
START 1-2 WEEKS BEFORE ENTERING THE MALARIOUS AREA, CONTINUE WEEKLY DURING YOUR STAY AND CONTINUE FOR 4 WEEKS AFTER LEAVING.
Note: Side effects include nausea and headache, including neurological side effects such as dizziness, ringing of the ears, and loss of balance. Psychiatric side effects include anxiety, depression, mistrustfulness, and hallucinations. Neurological side effects can occur any time during use and can last for long periods of time or become permanent even after the drug is stopped. Seek medical advice if any neurological or psychiatric side effects occur.