EditorialLaiyin Ma, an Ophthalmologist, pumps her breast milk at her office in Flushing, Queens, on Oct. 28, 2022. (Sara Naomi Lewkowicz/The New York Times)
EditorialA breast pump at the home of Margie Smith, who has given thousands of ounces to other mothers since she produces more than her children need, in Elgin, Ill., May 19, 2022. (Mary Mathis/The New York Times)
EditorialSamples of breast milk from women who have received COVID-19 vaccines, used by Rebecca Powell, a human milk immunologist at the Icahn School of Medicine at Mount Sinai in Manhattan, in her research, in New York on March 25, 2021. (James Estrin/The New York Times)