Epidemics and pandemics require an early estimate of the cumulative infection prevalence. sometimes referred to as the infection "Iceberg. " whose tip are the known cases. Accurate early estimates support better disease monitoring. https://www.diegojavierfares.com/amazing-price-Kicker-48CDF104-Comp-10-Down-Firing-Loaded-Subwoofer-Enclosure-special-find/