Jacqueline Muna Musiitwa, left, and her mom, Anne Sikwibele, at the airport in Lusaka, Zambia, in November. Musiitwa, who lives in Washington, D.C., is worried that her mom may not be able to visit the U.S. for Christmas. In an effort to stem the spread of the omicron variant, several nations have imposed travel bans on southern African nations, which are in a state of flux. (Jacqueline Muna Musiitwa)
