A woman wearing a face mask to protect against coronavirus, walks on a street, in Lagos, Nigeria, Dec. 31, 2020. A Nigerian scientist has spent the holiday season in his laboratory doing genetic sequencing to learn more about the country’s COVID-19 variant, as cases increase in the country. Virologist Sunday Omilabu says the information he gathers about the variant will help battle the spread of the disease in Nigeria, Africa’s most populous country with 196 million people. (AP Photo/Sunday Alamba)