U.S. health officials said Tuesday that all the initial swine-flu vaccine doses this week will be the nasal spray version, and injections will start next week. About 2.2 million doses of nasal spray are available so far, but it is not recommended for some of the people who are most in danger of complications from influenza, including pregnant women and people with asthma, the Centers for Disease Control and Prevention (CDC) said. As a result, some priority groups like healthcare workers and healthy children over age 2 can get vaccinated this week, but pregnant woman and others at risk should wait, officials said at a news conference at CDC headquarters in Atlanta, Georgia.
