Here are the latest health news updates:

• U.S. records most whooping cough deaths since 2017. Pertussis cases are on the rise again after a dip following the winter holidays. The CDC says respiratory illness is now "very high" nationwide2.

• Louisiana to "no longer promote" mass vaccination following RFK Jr.'s confirmation as HHS Secretary. The state's Department of Health announced it will end promotion of mass COVID-19 vaccination efforts3.

• Bird flu confirmed in older Wyoming woman who likely had contact with infected flock at her home. This comes as a new strain of H5N1 bird flu was detected in dairy cows, though risk to humans remains low34.

• Texas measles outbreak grows to 48 cases, all among unvaccinated individuals. The outbreak has now spread to New Mexico as well3.

• CDC to lose about 10% of workforce under Trump administration job cuts. Nearly 1,300 employees are being forced out as part of a move to eliminate probationary positions3.

• Doctors' visits for flu continue to reach record levels, with nearly 8% of outpatient visits for respiratory illness last week attributed to flu3.

• New research suggests GLP-1 drugs like Ozempic and Mounjaro may have effects on 175 different health outcomes beyond just weight loss4.

These updates reflect some of the most significant recent developments in public health, disease outbreaks, and health policy.