Prospective travelers must submit request to enter through the Office of the Secretary to the Prime Minister or the Ministry of Foreign Affairs and External Trad by writing to the head of the government’s COVID-19 committee, Permanent Secretary James Remobatu (firstname.lastname@example.org). Prospective travelers should clearly describe any special or compelling circumstances.
Travelers will have to show evidence of at least 3 negative tests prior to traveling. These tests should be undertaken 21 days before travel (first test) 12-14 days before travel (second test) and 48 hours before travel (third test).
Children under the age of 2 are exempt from presenting a COVID-19 test.
Travelers with proof of recovery from the virus within the last 90 days prior to boarding. Proof of a recent positive viral test and a letter from your healthcare provider or a public health official stating that you were cleared to travel.
More info at the CDC site
Travelers who did not get tested, are advised to stay home and self-quarantine for 10 days after travel.