In light of the COVID-19 oubreak, the Nigerian Centre for Disease Control decided to prohibit all the arrivals from the 13 most affected countries by the disease. According to Reuters, all the countries that have more than 1.000 confirmed cases, are banned to enter the country.
Specifically, the Nigerian Centre for Disease Control said: “We urge the public to restrict all non-essential travel to these countries” while added that the government is temporarily suspending the issuance of all visas...
https://safety4sea.com/nigeria-bans-entry-amid-covid-19-pandemic/