PLA2G2A and infection: To better analyze whether PLA2-CB and crotoxin have some effect on Vero cells that influences DENV-2 inhibition, the cells were treated with several concentrations of PLA2-CB and crotoxin, including those used in the virucidal assay after dilution (0.000004, 0.04, 0.08, 0.5, 1, and 2 ng/μL), before infection.