The World Health Organization reports (15 November 2018) no risk of yellow fever in Lesotho. The government of Lesotho requires proof of a yellow fever vaccination certificate for travellers arriving from or having transited through
countries with risk of yellow fever transmission.
- There are no transit facilities.
U.S. policy on dual nationality can be found
Stay is extendable.
State Dept. reports: "U.S. citizens may apply for extensions of an additional 30 days at a time through the Office of Immigration. The maximum number of 30 day extensions permitted is five, totaling 180 days. After 180 days U.S. citizens are required to apply for a visa online ."
Since entry/exit is via South Africa, it is important to also be aware of the entry/transit requirements of South Africa.