CLINICAL MEDICINE

Detailed explanation-1: -The answer is: not very. A widely held belief about flying is that everyone’s germs circulate in the stagnant air of a jetliner and there is a good chance many people on board will catch something.

Detailed explanation-2: -Infections may be spread on the aircraft through close contact and large droplets [1]; airborne spread through small-particle aerosols, as in the case of severe acute respiratory syndrome (SARS) [3]; or even through contaminated food [4, 5].

Detailed explanation-3: -Viruses within tissues can travel within the lymph and enter the blood if not successfully filtered by the lymph node immune cells. In neurotropic spread, viruses spread through the body using neurons. Viruses rarely infect neurons directly because it is difficult for viruses to directly access these cells.

Detailed explanation-4: -Harvard T.H. Chan School of Public Health They found that the multiple layer of measures, including the wearing of face masks and more frequent disinfection, together with the aircraft airflow systems, results in a very low risk of COVID-19 transmission on aircraft.