Evidence of Zika Virus Reinfection by Genome Diversity and Antibody Response Analysis, Brazil.

We generated 238 Zika virus (ZIKV) genomes from 135 persons in Brazil who had samples collected over 1 year to evaluate virus persistence. Phylogenetic inference clustered the genomes together with previously reported ZIKV strains from northern Brazil, showing that ZIKV has been remained relatively stable over time. Temporal phylogenetic analysis revealed limited within-host diversity among most ZIKV-persistent infected associated samples.

Subnational certification of elimination of mother-to-child transmission of HIV and/or syphilis: a Brazilian experience report.

Objective: to describe the subnational implementation process of the certification for elimination of mother-to-child transmission of HIV and/or syphilis, its main barriers, challenges and opportunities.

Methods: in 2022, indicators from the last full year for impact targets and the last two full years for process targets, available in national information systems, were evaluated; descriptive reports were analyzed and actions were acknowledged within four thematic axes, according to PAHO/WHO recommendations.

Results: 43 municipalities ≥ 100,000 inhabitants were certified, covering 24.

Cohort profile: Study on Zika virus infection in Brazil (ZIKABRA study).

Zika virus (ZIKV) has been detected in blood, urine, semen, cerebral spinal fluid, saliva, amniotic fluid, and breast milk. In most ZIKV infected individuals, the virus is detected in the blood to one week after the onset of symptoms and has been found to persist longer in urine and semen. To better understand virus dynamics, a prospective cohort study was conducted in Brazil to assess the presence and duration of ZIKV and related markers (viral RNA, antibodies, T cell response, and innate immunity) in blood, semen, saliva, urine, vaginal secretions/menstrual blood, rectal swab and sweat.

Knowledge about HPV and vaccination among young adult men and women: Results of a national survey.

Background: In addition to screening by Pap smears, vaccination against human papillomavirus (HPV) can dramatically reduce cervical cancers caused by the virus. The acceptance of HPV vaccination is directly related to HPV knowledge. This research aimed to evaluate knowledge about HPV and vaccination among men and women aged 16-25 years who use the public health system in Brazil.