COVID-19 transmission, vulnerability, persistence and nanotherapy: a review.

End 2019, the zoonotic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), named COVID-19 for coronavirus disease 2019, is the third adaptation of a contagious virus following the severe acute respiratory syndrome coronavirus in 2002, SARS-CoV, and the Middle East respiratory syndrome virus in 2012, MERS-CoV. COVID-19 is highly infectious and virulent compared to previous outbreaks. We review sources, contagious routes, preventive measures, pandemic, outbreak, epidemiology of SARS-CoV, MERS-CoV and SARS-CoV-2 from 2002 to 2020 using a Medline search.

The impact of nutrition on child development at 3 years in a rural community of India.

Background: In India, child malnutrition is mostly the result of high levels of exposure to infection and inappropriate infant and young child feeding and caring practices and has its origins almost entirely during the first 2 to 3 years of life. This study aims in assessing the impact of breast feeding on child development of children at 3 years.

Methods: About 530 children at 3 years were assessed for developmental delay by Ages and Stages Questionnaire (ASQ).

A brief review of risk-factors for growth and developmental delay among preschool children in developing countries.

The purpose of this article is to provide an overview of the highly prevalent risk factors influencing growth and development among pre-school children in rural population of developing countries. A child's brain during the first 3 years of life is rapidly developing through generation of neurons, synaptogenesis, axonal, and dendric growth and synaptic pruning each of which build upon each other. Any interruption in this process, such as trauma, stress, under-nutrition or lack of nutrients can have long-term effects on the brain's structure and on the child's socio-emotional development.

Median nerve somatosensory evoked potentials in medical students: Normative data.

Background: The median nerve N20 component constitutes the initial response of the primary somatosensory cortex to somatosensory stimulation of the upper extremity. Knowledge of the underlying generators is important for basic understanding of the initial sequence of cortical activation.

Materials And Methods: In the present study, normative data of cortical evoked potentials in particular of N20 wave onset and peak latencies by median nerve stimulation in a group of 100 medical students aged between 18 and 30 years were documented and the effect of physiological variables were studied.

Physiological effects of yogic practices and transcendental meditation in health and disease.

Yoga is an ancient Indian way of life, which includes changes in mental attitude, diet, and the practice of specific techniques such as yoga asanas (postures), breathing practices (pranayamas), and meditation to attain the highest level of consciousness. Since a decade, there has been a surge in the research on yoga, but we do find very few reviews regarding yogic practices and transcendental meditation (TM) in health and disease. Keeping this in view, a Medline search was done to review relevant articles in English literature on evaluation of physiological effects of yogic practices and TM.