Here are the travel requirements for US citizens entering Lagos, Nigeria:

1. Passport: Your passport must be valid for at least six months beyond the date of entry and have at least one blank visa page.

2. Visa: US citizens traveling to Nigeria for tourism or business purposes must obtain a visa before arrival. You can apply for a Nigerian visa at the Nigerian Embassy or Consulate nearest to your location. Visa applications typically require a completed application form, passport photos, a copy of your itinerary, proof of sufficient funds for your stay, and a visa fee.

3. Yellow Fever Vaccination: Like Tanzania, Nigeria also requires proof of yellow fever vaccination for travelers arriving from countries where yellow fever is endemic. Ensure you have a valid yellow fever vaccination certificate with you.

4. COVID-19 Requirements: Due to the ongoing COVID-19 pandemic, travelers to Nigeria may need to comply with additional requirements, such as providing proof of a negative COVID-19 test taken within a specified timeframe before departure. Quarantine measures and testing upon arrival may also be in place, so it’s essential to check the latest guidelines from Nigerian authorities and your airline before traveling.