A court upheld Chicago's rule forcing police officers to get COVID shots. A union tried to block it, but the court rejected the bid. Experts still say the shots mostly do more good than harm. The WHO now pushes harder to fight cervical cancer with vaccines. That goal fits into bigger health plans. A new baby death study looks at how swelling might be involved. Reports also mark how U.S. vaccines have shaped health care for two and a half centuries. These varied efforts show how shots keep helping people avoid harm.