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In page Q fever:

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In 2001, Australia introduced a national Q fever vaccination program for people working in "at-risk" occupations. Vaccinated or previously exposed people may have their status recorded on the Australian Q Fever Register,[4] which may be a condition of employment in the meat processing industry or in veterinary research.[5] An earlier killed vaccine had been developed in the Soviet Union, but its side effects prevented its licensing abroad.[citation needed]