Two cases are reported of acute idiopathic blind spot enlargement syndrome (AIBSE) that presented with peripapillary white spots in the fundus. AIBSE belongs to the acute zonal occult outer retinopathy (AZOOR) complex. Conditions of this AZOOR complex may overlap. Typically, in AIBSE, a peripapillary hyperautofluorescence is seen in the autofluorescence. En-face OCT angiography at the ellipsoid level showed hyper-reflective spots around the optic disk in both cases. One case showed a reversible enlargement of the blind spot in visual field. AZOOR complex is an inflammatory disorder that affects the outer retina, and can now be confirmed with structural optical coherence tomography. In the cases presented, there was a reversible severe loss of the outer retina.

To compare parental satisfaction and impact on daily life among parents of children receiving whole-cell pentavalent+oral polio vaccine (Arm1) with an acellular hexavalent vaccine (Hexaxim; Arm2).

Self-administered electronic questionnaire at vaccination and one week later in six community health clinics of metropolitan Santiago, Chile, exploring parent-reported outcomes on satisfaction, acceptability, and impact on daily life after immunization. Univariate and multivariate analyses were conducted to determine differences in the responses in both groups (α=0.05).

The study enrolled 800 participants and 65% (222 in Arm1, 296 in Arm2) were included for according-to-protocol analysis. Demographic characteristics were comparable, except for a higher proportion of mothers answering the questionnaire at the 6-month visit. Regardless of the study arm, parental knowledge and perception of the immunization practices were good, and there were no differences in vaccination experiences in the prior 5years. However,re vaccination, and lower impact on the family daily routine were significantly better in the group receiving the hexavalent vaccine. We also found that health care providers’ recommendations to vaccinate and participants’ access to health services were important factors favoring immunization.

21 million pregnant women worldwide (18%) are estimated to carry Group B Streptococcus (GBS), which is a risk for invasive disease in newborns, pregnant women, and stillbirths. Adults≥60years or with underlying health conditions are also vulnerable to invasive GBS disease. We undertook systematic reviews on GBS organism characteristics including capsular polysaccharide (serotype), sequence type (multi-locus sequence types (MLST)), and virulence proteins. We synthesised data by at-risk populations, to inform vaccine development.

We conducted systematic reviews and meta-analyses to estimate proportions of GBS serotypes for at risk populations maternal colonisation, invasive disease in pregnant women, stillbirths, infants 0-90days age, and older adults (≥60years). We considered regional variation and time trends (2001-2018). For these at-risk population groups, we summarised reported MLST and surface proteins.

Based on 198 studies (29247isolates), 93-99% of GBS isolates were serotypes Ia, Ib, II, III, IV addressing data gaps especially by world region and some at-risk populations (notably stillbirths) is fundamental to evidence-based decision-making during vaccine design.

A hexavalent vaccine (serotypes Ia, Ib, II, III, IV and V) might provide comprehensive cover for all at-risk populations. Surveillance of circulating, disease-causing target proteins is useful to inform vaccines not targeting capsular polysaccharide. Addressing data gaps especially by world region and some at-risk populations (notably stillbirths) is fundamental to evidence-based decision-making during vaccine design.

Vaccination of pregnant women protects both women and their newborns against some infectious diseases. SCH900353 Thailand implemented tetanus toxoid (TT) vaccination of pregnant women in 1977, which was replaced by tetanus-diphtheria toxoid (dT) vaccination in 2005. The tetanus-diphtheria-acellular pertussis (Tdap) vaccine has been recommended for pregnant women at 27-36weeks of gestation since 2012 in several countries. Data on antibody responses to diphtheria toxoid (DT), TT, and Hemophilus influenzae type b (Hib) induced by combined vaccines in children born to TT-vaccinated and/or Tdap-vaccinated mothers are limited.

We investigated anti-DT, anti-TT, and anti-Hib IgG responses in a cohort of Thai children (ClinicalTrial.gov NCT02408926) born to mothers who received a TT-containing and/or the Tdap vaccine during pregnancy. Children born to Tdap-vaccinated mothers were randomized to receive either a hexavalent (Infanrix-hexa) or pentavalent (Quinvaxem) vaccine, whereas children born to TT-vaccinated mothers receiimary and booster immunization in individuals receiving either the pentavalent or hexavalent vaccine.

Vaccination with a TT-containing and/or the Tdap vaccine during pregnancy did not compromise the seroprotection rate achieved following primary and booster immunization in individuals receiving either the pentavalent or hexavalent vaccine.Food poisoning in humans caused by Salmonella enterica remains a significant global public health concern, with the majority of infections associated with the consumption of contaminated eggs or poultry products. The safety and efficacy of a novel inactivated trivalent Salmonella enterica vaccine containing in addition to Salmonella serovars Enteritidis (O9, serogroup D) and Typhimurium (O4, serogroup B) also serovar Infantis (O7, serogroup C1) formulated with an aluminium hydroxide-gel adjuvant was evaluated under field conditions. A total of 10,229 broiler breeder pullets, housed under commercial conditions, were vaccinated at 10 and 17 weeks of age by the intramuscular route in the breast muscle. The vaccine was safe with no local or systemic reactions or adverse effects on bird performance related to the vaccine detected. Vaccination resulted in notable increases in serovar specific antibodies that were maintained until at least 56 weeks of age. Vaccinated birds subjected to homologous challenges around onset of lay showed significantly reduced faecal shedding and organ invasion. Following heterologous challenge with S. Hadar (O8, serogroup C2) faecal shedding was significantly reduced. These results demonstrate that this novel vaccine could play a significant role in a comprehensive Salmonella control programme intended to reduce both the incidence of food poisoning in humans and the use of antibiotics during poultry production.