Separately, a JAMA study suggests amoxicillin alone should be first-line for uncomplicated acute sinusitis, with no added benefit from amoxicillin-clavulanate and potential more secondary infections with the combo.

Defense Secretary Pete Hegseth announced that influenza vaccination will be voluntary for all active-duty troops, reservists, and civilian personnel, marking a shift away from the prior annual flu-shot mandate.

External Spiegel articles and a fact-check are cited to provide context on vaccines, public health, and political actors.

This is presented as a developing story, with readers urged to await further updates.

Social media posts corroborate the announcement, and a publicly available updated guidance document details the new policy.

The three briefs are part of a news roundup, drawing on sources from DoD, GWU, JAMA, Mass General Brigham, CIDRAP, and WHO.

The Pentagon did not immediately provide details on the policy’s effective date or other specifics when contacted by USA TODAY.

Public health experts warn the policy could raise illness and impact force readiness and healthcare costs.

The article emphasizes vaccination as the best prevention per WHO and underscores ongoing guidance to protect high-risk populations and close contacts.

The policy change is framed within a broader political context, including the Trump administration’s efforts to reshape vaccine recommendations and ongoing legal questions around vaccines for children.

Historically, U.S. military vaccination programs go back to the American Revolution, with recent history including COVID-19 vaccine mandates and subsequent reinstatement policies for those who refused.

The piece includes a video announcement and hashtags touching on national security, freedom of conscience, and debates over military policy.