A study involving rhesus macaques suggests that pre-existing dengue virus immunity does not result in more severe Zika disease, the second study this week to report this type of finding.
Also, a new US report outlines the usefulness of testing placental and fetal tissue.
An analysis of blood samples from Brazilian patients seen in an emergency department for acute febrile illness found no sign of antibody-dependent enhancement (ADE) in those with Zika infection who had previously been exposed to dengue virus.
A separate study found Zika virus in the saliva of 5 different mosquito species in Mexico.
Nine Brazilian infants with congenital Zika infections developed moderate to severe dysphagia, or problems with swallowing, increasing the risk of aspirating liquids and choking, according to a report yesterday in Emerging Infectious Disease.
The findings are consistent with an earlier report on women in US states.
President Donald Trump announced yesterday that Francis Collins, MD, PhD, an Obama administration holdover, will stay on as permanent director of the National Institutes of Health (NIH), multiple media sites reported.
The World Health Organization (WHO) in its latest update reported a new suspected case of Ebola in the Democratic Republic of the Congo (DRC), prompting the surveillance of 15 additional contacts. The suspected case is from the Ngayi health area, in northern DRC.
The Democratic Republic of the Congo (DRC) on Jun 2 said that two suspected Ebola cases had been confirmed via laboratory testing. According to the World Health Organization (WHO), these cases came from known transmission chains, and the date of the last confirmed case in the DRC remains May 11.
Restrictions are lifted because the area has had no Zika activity for more than 45 days.
