The World Health Organization reports (15 November 2018) a risk of yellow fever in Cameroon. The government of Cameroon requires proof of a yellow fever vaccination certificate for
- Transit without visa with a confirmed onward ticket for a flight to a third country within 24 hours. Must stay in the international transit area of the airport and have documents required for the next destination.
Cameroon does not recognize dual nationality. Source gives the visa requirement:"For naturalized U.S. citizens born in Cameroon who are applying for a visa for the first time, surrender the former Cameroonian passport." U.S. policy on dual nationality can be found
Stay is not extendable.
Source states: "Travelers must apply for an entry visa in person by appointment, or by mail, no more than 90 days before their date of arrival in Cameroon."
Source states: "The processing time for visa applications is seven (7) business days...be aware that the processing time may extend over the seven (7) business days during peak periods such as before and during the summer or Christmas holidays."
Visas for longer stays are also available: Short Stay (3 months), Long Stay (6 months), and Long Stay (one year).