Tens of thousands of California healthcare workers are scrambling to get vaccinated for the H1N1 flu. Federal officials, who list healthcare workers among those at greatest risk for H1N1 flu, had promised California 6.2 million doses by now. But the state has received just 2.7 million doses due to manufacturing shortages, said Mike Sicilia, a spokesman for the California Department of Public Health. Nationwide, only about 27 million of an expected 40 million doses are available. With so few doses in hand, doctors and nurses say they have been forced to wait in line or volunteer at public clinics to get vaccinated, the Los Angeles Times reports.