OBJECTIVE To assess the immunization status of children aged 12-23 months and its determinants in Aden, Yemen. METHODS This cross-sectional survey was conducted between March and July 2007 during which time mothers of 680 children from 37 randomly selected clusters in Aden, were interviewed. Information on socio-demographic profiles and children`s immunization status was obtained. Immunizatio...

The high incidence of emerging infectious diseases has highlighted the importance of effective immunization strategies, especially the stochastic algorithms based on local available network information. Present stochastic strategies are mainly evaluated based on classical network models, such as scale-free networks and small-world networks, and thus are insufficient. Three frequently referred s...

background: during the last twenty years, the extraction of specific egg yolk (igy) antibodies from the immunized chickens has been accepted as a useful alternative to the immunization of mammals. the aim of the present study was immunizing the chickens with human umbilical cord serum (hucs) and the extraction of specific anti-human globulins (igg, c3b, and c3d) antibodies from egg yolk in orde...

background: vaccination status is more often evaluated by up-to-date vaccination coverage rather than timeliness of immunization. this study was conducted to evaluate delayed vaccination during infancy period and to determine the predictors effecting on vaccination delay. methods: this cross-sectional study was conducted from june to september 2011 in hamadan province, the west of iran, recruit...

background: most studies evaluated the vaccine coverage, but the time of vaccination is important as coverage. this study was conducted to evaluate the expanded program of immunization (epi) in outskirt of iranian cities regarding to incidence of delay vaccination among children less than 4 years. methods : this cross sectional descriptive study was conducted among children 24-47 months old, li...