Use of oral polio vaccine and the incidence of COVID-19 in the world.

Background: Several live attenuated vaccines were shown to provide temporary protection against a variety of infectious diseases through stimulation of the host innate immune system.

Objective: To test the hypothesis that countries using oral polio vaccine (OPV) have a lower cumulative number of cases diagnosed with COVID-19 per 100,000 population (CP100K) compared with those using only inactivated polio vaccine (IPV).

Methods: In an ecological study, the CP100K was compared between countries using OPV vs IPV.

Identifying Important Attributes for Prognostic Prediction in Traumatic Brain Injury Patients. A Hybrid Method of Decision Tree and Neural Network.

Background: Generally, traumatic brain injury (TBI) patients do not have a stable condition, particularly after the first week of TBI. Hence, indicating the attributes in prognosis through a prediction model is of utmost importance since it helps caregivers with treatment-decision options, or prepares the relatives for the most-likely outcome.

Objectives: This study attempted to determine and order the attributes in prognostic prediction in TBI patients, based on early clinical findings.

Prevalence of metabolic syndrome in adult population in Shiraz, southern Iran.

Aim: Metabolic syndrome (MSx) is associated with increased risk of cardiovascular diseases and type 2 diabetes mellitus. This study evaluated the prevalence of MSx in adult population in Shiraz, southern Iran.

Methods: In a cross-sectional study conducted between October 2012 and April 2013, using a simple random sampling method, 377 adults aged more than 20 years who were invited for periodic health examinations to Petroleum Industry Health Organization Polyclinic, a general health care center, Shiraz, southern Iran, were studied.