Travelers should be aware that malaria symptoms can occur, long after the traveler has left the malaria-endemic area. (Normally under 3 months.)

"Antimalarial drugs taken for prophylaxis by travelers can delay the appearance of malaria symptoms by weeks or months, long after the traveler has left the malaria-endemic area. (This can happen particularly with P. vivax and P. ovale, both of which can produce dormant liver stage parasites; the liver stages may reactivate and cause disease months after the infective mosquito bite.)

Such long delays between exposure and development of symptoms can result in misdiagnosis or delayed diagnosis because of reduced clinical suspicion by the health-care provider. Returned travelers should always remind their health-care providers of any travel in areas where malaria occurs during the past 12 months."

cdc.gov/malaria

 
Watch for Malaria symptoms if you traveled to any of these countries:
(NORMALLY for 3 months after.)
 

A

Afghanistan
Algeria
Angola
Argentina
Azerbaijan

B

Bangladesh
Belize
Benin
Bhutan
Bolivia (Plurinational State of)
Botswana
Brazil
Burkina Faso
Burundi

C

Cambodia
Cameroon
Cape Verde
Central African Republic
Chad
China
Colombia
Comoros
Congo
Costa Rica
Côte d'Ivoire

D

Democratic People's Republic of Korea
Democratic Republic of the Congo
Djibouti
Dominican Republic

E

Ecuador
El Salvador
Equatorial Guinea
Eritrea
Ethiopia

F

French Guiana

G

Gabon
Gambia
Ghana
Guatemala
Guinea
Guinea-Bissau
Guyana

H

Haiti
Honduras

I

India
Indonesia
Iran (Islamic Republic of)

K

Kenya
Kyrgyzstan

L

Lao People's Democratic Republic
Liberia

M

Madagascar
Malawi
Malaysia
Mali
Mauritania
Mayotte
Mexico
Mozambique
Myanmar

N

Namibia
Nepal
Nicaragua
Niger
Nigeria

P

Pakistan
Panama
Papua New Guinea
Paraguay
Peru
Philippines

R

Republic of Korea
Rwanda

S

Sao Tome and Principe
Saudi Arabia
Senegal
Sierra Leone
Solomon Islands
Somalia
South Africa
South Sudan
Sri Lanka
Sudan
Suriname
Swaziland

T

Tajikistan
Thailand
Timor-Leste
Togo
Turkey

U

Uganda
United Republic of Tanzania (Mainland)
United Republic of Tanzania (Zanzibar)
Uzbekistan

V

Vanuatu
Venezuela (Bolivarian Republic of)
Viet Nam

Y

Yemen

Z

Zambia
Zimbabwe

who.int Malaria Country Profiles

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