Background Allergic respiratory diseases (ARD) are a highly prevalent health problem affecting infants and children in Yemen. Early infant feeding predisposition to the development of ARD has been a controversial question. The aim of this study is to investigate the association between early feeding before 6 months of age and the development of ARD among children attending Childhood and Maternity Public Hospital (CMPH), Ibb, Yemen Republic. Subjects and methods The study population included 151 child patients attending the pediatric clinic at CMPH. Upon clinical and laboratory examinations, 72 out of 151 patients had ARD, while the other 79 had diseases other than ARD; all of them were used in risk assessment. Fifteen blood samples from healthy volunteers were used in laboratory investigations as a control. Complete blood count and IgE level were investigated for all participants. Children's parents were requested to give an informed consent and fill questionnaire about demography and history details. Results Early infant feeding was a significant risk factor for the development of ARD with an odds ratio (OR) of 6.8 and 95% confidence interval (CI) 3.0 to 15.3. Artificial milk particularly was risk factor with an OR of 6.1 and 95% confidence interval 2.7 to 13.5. Artificial milk exhibited more wheezing and asthma attack than others (OR 4.3, 95% CI 1.9 to 9.4 and OR 7.6, 95% CI 3.5 to 16.3, respectively). The risk of wheezing and asthma attack also increase with early feeding generally (OR 3.0, 95% CI 1.3 to 7.2 and OR 4.8, 95% CI 2.2 to 8.1, respectively). The patients had a higher sensitization markers than the control, such as eosinophil count and total serum IgE. The highest levels of IgE ever reported existed among early fed patients with artificial milk. Conclusions Early infant feeding, particularly with artificial milk, is a risk factor predisposing infants to the development of allergic respiratory disease presented with more clinical features of wheezing and asthma attack.

Background: Exposure to Hepatitis B virus (HBV) infection is one of the most common occupational diseases among the providers of the health care services. During the course of their clinical work; Health Care Workers (HCWs) are at risk of acquitting HBV infection or transmitting it to their patients. Vaccination for medical personnel against HBV  in Yemen Republic is recommended but not strictly enforced. Detection of the viral hepatitis B surface antigens (HBsAg) is one of the accurate and cheap methods to assess HBV prevalence. This method is used in this study to assess HBV prevalence among HCWs in Taiz; to in order to improve on methods of interventions to control this infection among them. Objectives: The objective of this study was to assess the vaccination status and the seroprevalence of HBsAg among HCWs in Taiz; Yemen republic.  Methods: This cross sectional study was conducted through the period between January and March, 2018, and from April and July, 2019, in the part of Taiz City; Yemen Republic belonging to legitimate authorities. 362 HCWs were included in this study and are selected through repeated casual visits to hospitals and medical centers. A questioner was made to get information on the participants’ characteristics and their vaccination status, medical hestory and risk factors for HBV transmission. Five ml venous blood was then collected from every participant to assess HBsAg. Results: the overall vaccination percentage was 21.54% (27.5% in male and 17.9% of female). The seroprevalence of HBsAg was 2.76%, all vaccinated participants were HBsAg negative. Needle stick and sharp object injury was an important risk factor of HBV infection.