The Delta variant of the COVID-19 virus is more contagious and spreads fast in children, says CDC. Besides, it may lead to severe illness in children and adults. The typical symptom of the Delta variant is loss of smell and cough. In contrast, major symptoms include headache, sore throat, runny nose, and fever. The Delta variant is more infectious than the previous strains of COVID-19. Delta COVID-19 cases have been reported in North America, the ...