Bill Cassidy offered jabs to thousands of inmates at Louisiana's maximum-security prison in the early 2000s. A decade before that, he set up vaccine clinics in middle schools, a model hailed nationally as a success.

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Today, a year after now-Sen. Cassidy warily cast the vote that ensured Robert F. Kennedy Jr.'s ascension to that role, the Louisiana Republican's life's work -- in medicine and in politics -- is unraveling.

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Last year, on the day Kennedy was sworn in a thousand miles away in Washington, Louisiana's health department stopped promoting vaccines, halting its clinics and advertising. Its communications about an ongoing whooping cough outbreak in the state have nearly ceased. It took months for the state to announce last year that two infants had died from the illness. A Louisiana child's death from the flu was confirmed this January, and a couple of cases of measles were reported last year.

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