Close up of one young Asian man wearing a black surgical face mask and using a mobile phone in subway train during new type Coronavirus Covid-19 pneumonia outbreak and pm 2

protective face mask surgical mask air pollution smog safety wireless technology infectious disease portable information device epidemic protection technology smart phone human face east asian ethnicity train - vehicle mobile phone pandemic - illness subway chinese ethnicity film - moving image cold and flu pneumonia men korean ethnicity transportation japanese ethnicity coronavirus travel spreading city life people asian and indian ethnicities city only men illness non us film location one person 4k resolution healthcare and medicine clothing adult social issues mode of transport young adult horizontal males one man only one young man only guarding healthy lifestyle telephone human body part close-up young men adults only covid-19 defending - activity