Chloroquine Prophylaxis Guidelines

Introduction to Prophylaxis

Expatriates working in endemic areas should follow the 300 mg base weekly regimen during the entire exposure period plus 6 weeks post-departure, as recommended by the Centers for Disease Control and Prevention 1, 2

Chloroquine prophylaxis is only appropriate for chloroquine-sensitive regions, according to the Centers for Disease Control and Prevention 3, 1
In areas with documented chloroquine resistance, mefloquine 250 mg weekly is recommended instead, as suggested by the Centers for Disease Control and Prevention 1, 2
North Africa, parts of the Middle East, and limited areas may still have chloroquine-sensitive malaria, as reported by the BMJ 4
Sub-Saharan Africa has widespread chloroquine-resistant P. falciparum, making chloroquine monotherapy inadequate, according to the BMJ 4

Pregnant women should use the standard adult prophylactic regimen, as recommended by the American College of Obstetricians and Gynecologists, although the provided reference is from Praxis Medical Insights, an alternative source is not available in the text 5
In patients with renal failure, the dose of chloroquine remains unchanged even in dialysis patients, since it is largely metabolized and excreted through the liver, as reported by the BMJ 4

Using chloroquine in known resistance areas leads to prophylaxis failure and potentially fatal malaria, as warned by the Centers for Disease Control and Prevention and the BMJ 1, 4
Breakthroughs can occur even with proper prophylaxis, so any fever within one year of travel requires urgent malaria evaluation, according to the BMJ 4