A single dose of the vaccine candidate triggered neutralizing antibody production in 98.9% of recipients 28 days later.
Dengue in the Americas is outpacing 2022 activity by 12%, and chikungunya is also on the rise.
PAHO officials say they are seeing changes in the timing and magnitude of cases that are likely related to the effects of climate change and unplanned urbanization.
Separate WHO reports describe widening dengue and chikungunya activity in the Americas and the expansion of cholera outbreaks to four more countries.
Cases are surging, especially in Paraguay and Brazil, with conditions ripe for further spread and health systems weakened by the pandemic and other demands.
Since the outbreak began in October 2022, officials have reported 71,748 suspected cases of the mosquito-borne disease.
Valneva submitted promising data from a phase 3 trial, final lot-to-lot consistency results, and positive 1-year persistence data.
There were more than 271,000 chikungunya illnesses last year, 95 of them fatal, compared with about 137,000 cases in 2021.
A study of hospitalized pneumonia patients in Denmark found similar outcomes between short-course and prolonged-course antibiotic therapy, Danish researchers reported yesterday in Clinical Microbiology and Infection.
A study involving simulated patients found that dispensing antibiotics without a prescription is common in Indonesian drug stores and pharmacies, despite regulations against it, researchers reported this week in BMJ Global Health.
