Health ❯ Immunology

Vaccine Efficacy

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Measles Resurgence Escalates With Hospital Exposures and Growing Local Clusters

Contact tracing with targeted vaccination drives aims to curb spread that could threaten the U.S. measles‑elimination status.

‘Cicada’ COVID Variant Spreads Globally as Officials Track Its Rise

Stratus Variant Drives California COVID Wave as FDA Limits New Vaccine to High-Risk Patients

Nimbus COVID Variant Drives 55% of Cases in California

Nimbus Variant Becomes Second-Most Common COVID-19 Strain in U.S.