December birthday 2020 the one where I’m quarantined shirt

Respiratory diseases appear to be present at all times in the equatorial region but with lower incidence when compared to seasonal cycles in temperate regions. The cyclicity of the disinfection effect of solar radiation can resonate with the frequency of immunodeficiency of an infected host. The combination of these two mechanisms creates the seasonality of the disease, ranging from a few years to several decades depending on the frequency of the virus.