The report also spotlights the urgency of vaccines for pathogens such as group A Streptococcus and Klebsiella pneumoniae, which are increasingly resistant to antimicrobials.
PAHO says it will provide countries in the Americas with affordable access to respiratory syncytial virus vaccine.
Activity has persisted beyond seasonal spikes, fueled by multiple factors including vector-control gaps, weather anomalies, and population displacement.
Since the 1970s, cases of travel-associated malaria have ticked upward in the United States.
The first phase of Nigeria's campaign will begin in November, targeting Kebbi and Beyelsa states, where malaria activity is especially high.
Researchers say the findings highlight the need for more comprehensive approaches to managing fever in children under 5 in sub-Saharan Africa.
The PfSPZ vaccine was safe and prompted durable protection across 2 years.
Nipah virus, which has a high fatality rate, is a top target for countermeasure development.
The first dose was given in Abidjan, and the rollout will target 38 districts across the country.
Sixty-eight imported malaria cases were identified in Pima, Arizona; San Diego, California; and El Paso, Texas, compared with 28 cases in 2022.
