One and done: Why some people want Johnson & Johnson's vaccine

But the early days of its rollout suggest something different: Some people are eager to get it because they want the convenience of a single shot. And public health officials are enthusiastic about how much faster they could get a single shot distributed, particularly in vulnerable communities that might not otherwise have access to a vaccine.

“This is a potential breakthrough,” said Dr. Joseph Kanter, the top health official in Louisiana. With its first allotted doses, the state is holding a dozen large Johnson & Johnson vaccination events at civic centers and other public places, modeled after what has worked for flu vaccines…

Many state health officials said they were focused on getting the vaccine to people who might be harder to reach for a second dose, such as those who are homeless or on the verge of release from prison. In North Carolina, this category includes the mobile agricultural communities in the state with three- or four-week work seasons. Mandy Cohen, the state’s health secretary, said that large meatpacking plants in the state such as Smithfield and Tyson Foods were interested in the Johnson & Johnson vaccine and had been consulting with her department.