artificial ventilation; breathing; coronavirus disease 2019; coughing; decontamination; disease transmission; disinfection; environment; flammability; hand washing; heat; human; lung function; microorganism; pandemic; psychologic assessment; review; safety; SARS coronavirus; Severe acute respiratory syndrome coronavirus 2; sneezing; social distancing; social status; static electricity; ultraviolet radiation; United Nations Children's Fund; vaccination; virus transmission; World Health Organization; ethylene oxide; polypropylene; SARS-CoV-2 vaccine; cloth mask; filtering facepiece respirator; glove; mask; minimally 80 percent efficient filtering facepiece respirator; minimally 94 percent efficient filtering facepiece respirator; minimally 99 percent efficient filtering facepiece respirator; minimally 99.97 percent efficient filtering facepiece respirator; surgical mask; bacteria filtration efficiency; splash resistance; nonmedical mask