Last summer, at the Centers for Disease Control and Prevention, an internal presentation on the coronavirus, which wasĀ leaked to the press, called the Delta variant ofĀ covid-19 āas transmissible as chicken pox.ā Although the claim was found to beĀ overstated, itās easy to see why researchers may have been predisposed to draw parallels between the two diseases. Both varicella-zosterāthe proper name for the chicken-pox virusāand the coronavirus are spread through the air, and both can be contagious before any symptoms are evident. Both have relatively mild impacts on most children, with a higher risk of more serious effects in adults. The mostly apocryphal tales of ācovidĀ partiesāāwhich almost always turn out to beĀ unintentional spreader eventsādescend from those of āchicken-pox parties,ā where parents knowingly exposed their children to symptomatic peers.
There was also a kind of wistfulness in the comparison. A vaccine for varicella received full approval from the Food and Drug Administration in 1995, and within a decade forty states and the District of ColumbiaĀ added varicellaĀ as a required immunization for enrollment in public elementary schools. Today all fifty states enforce this mandate. (Medical and religious exemptions vary state by state.) Near-universal mandatory immunization against chicken pox virtually eliminated the disease in the space of a generation.
Read more at The New Yorker.