Conectar
by Farhan R. Chowdhury, M. Ismail Hossain, Tangerul A. Jepu, Nusrat U. A. Saleh, Fatema T. Zohora, Tasmim A. Saleh, Mrinmoy Sarker, Al Numan, Zainab Yousuf, M. Aftab Uddin, Muktadir S. Hossain
Pneumococcal diseases caused by the human pathogenic bacterium Streptococcus pneumoniae are a major public health concern worldwide. In this study, we examined the pathogenicity of a clinical isolate of S. pneumoniae in the silk moth, Bombyx mori, larvae infection model. The whole genome sequencing of a clinical isolate of S. pneumoniae, Spn1 identified the presence of genes responsible for its virulence and antibiotic resistance. Spn1 infection of Bombyx larvae resulted in death within 24 h concomitant with an increase of phenoloxidase activity in the hemolymph. The bacterial load increased in the hemolymph within 9 h post-infection (p.i.) Ampicillin, ceftriaxone, tetracycline, imipenem, and erythromycin showed therapeutic effect in infected larvae, although the bacterial strain was resistant to erythromycin in vitro. The Bombyx homologs of mammalian TLR2 and TLR4, known as BmToll2 and BmToll9 (BmToll9−1 and BmToll9−2 isoforms), were upregulated in both the fat body and trachea. The antimicrobial peptide (AMP) genes, BmdefensinA and BmdefensinB, known to be regulated by the Toll signaling pathway, were significantly upregulated in both fat body and trachea after S. pneumoniae infection through hemolymph. Our data indicate that the Bombyx larvae can be a suitable infection model to study the pathogenicity of S. pneumoniae.The timing of a woman’s first birth is significantly associated with maternal and child health outcomes and socioeconomic opportunities. Delaying the first birth is associated with reduced risks of adolescent pregnancy complications, improved birth outcomes and enhanced interpregnancy intervals, all of which contribute to better maternal and child health. In Somaliland, early childbearing is prevalent, necessitating an understanding of its associated factors. Early childbearing, defined as a first birth before age 20, is prevalent in Somaliland, with 47.02% of women having their first birth by this age, significantly higher than the average for sub-Saharan Africa (approximately 30%) and global figures.
This study aimed to identify the sociodemographic factors associated with age at first birth among married women in Somaliland.
The median duration from marriage to first birth was 3 years, with a median age at first birth of 21 years. Women residing in the Sool (adjusted HR: 1.318, 95% CI 1.138 to 1.527) and Sanaag (adjusted HR: 1.265, 95% CI 1.095 to 1.462) regions had a significantly higher hazard of first birth compared with those in Awdal (reference). Conversely, women in the middle (adjusted HR: 0.821, 95% CI 0.685 to 0.985) and highest (Adjusted HR: 0.799, 95% CI 0.663 to 0.964) wealth quintiles had a significantly lower hazard of first birth compared with the lowest wealth quintile. Age at first marriage was a strong factor associated with the outcome; marrying at age 20 or older (adjusted HR: 0.699, 95% CI 0.644 to 0.759) was associated with a significantly lower hazard of first birth compared with those who married before age 20. After adjustment, other factors including residence, media exposure and husband’s employment status were not significantly associated with the timing of first birth.
Region, wealth quintile and age at first marriage are critical factors associated with first birth timing in Somaliland. Interventions should focus on addressing regional disparities and promoting delayed marriage to improve maternal and child health outcomes. Further research is needed to explore the complex social and cultural drivers of these findings.
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