Novel Aspects of COVID-19 after a Two-Year Pandemic

The reprint describes all aspects of the fight against SARS-CoV-2- infection (COVID-19). RNA viruses are claimed to be the most common cause of infectious diseases in disasters. Distinguished medical teams in five different countries described their responses to COVID-19 for medically vulnerable people such as HIV-infected persons, the elderly, and cancer-bearing patients. The reprint also encompasses studies of serological, molecular, and image diagnosis of COVID-19. The pathogenic roles of GABA were also proposed.It was also proposed that SARS-CoV-2 infection upregulates GABA, protecting not only the central nervous system, but also the endothelia, pancreas, and gut microbiota. Very rare cases with spontaneous pneumothorax and acute exacerbation after tocilizumab treatment were reported. This reprint teaches effective measures against the ongoing COVID-19 epidemic.