The asymptomatic spread of the new coronavirus remains a considerable problem, contributing to the recent surge in COVID-19 cases, according tomedia BGR. Asymptomatic carriers pose a higher risk because they can spread the disease just days before symptoms appear, according to a new study. Researchers say enhanced detection and contact tracking are the only way to find these “super-transmitters” and reduce transmission rates.
The new study explains that two special types of “silent transmitters” may account for half of the new confirmed cases of COVID-19, providing a solution to control outbreaks and reduce transmission. Unfortunately, this study does not propose new treatments or treatments that can cure the disease.
Researchers from Yale University’s Center for Infectious Disease Modelling and Analysis studied the spread model of the new coronavirus and concluded that asymptomatic infections and pre-symptom patients may be more than 50 percent of the causes of transmission. They looked at other available studies that said asymptomatic infections accounted for between 17.9 and 30.8 percent of the total number of cases.
“Our results suggest that the spread of silent disease before and without symptoms is the cause of the total onset rate of more than 50 percent in COVID-19 outbreaks,” the researchers wrote. “Furthermore, even if all symptomatic cases are immediately quarantined, this silent transmission can sustain the outbreak.”
The researchers believe that the only way to prevent these “silent communicators” from infecting others is to step up detection and contact tracing. Increased testing can help officials detect COVID-19 cases early and prevent asymptomatic infections and pre-symptom patients from coming into contact with others to spread the disease. Contact tracing can help authorities manage infection clusters and local outbreaks to prevent them from expanding.
“As the Cdc’s revised guidelines point out, our findings highlight the urgent need to expand the detection of asymptomatic suspected cases,” the researchers warned. “Furthermore, symptom-based monitoring must be complemented by rapid contact-based monitoring to identify exposed individuals before infection.”