People in the presymptomatic stage are highly contagious.
“The peak of viral shedding occurs right before symptoms develop and immediately after, when the symptoms are still mild,” Dr. Narasimhan says.
Sanjay Gupta, MD, CNN's Chief Medical Correspondent, also previously said that those who are presymptomatic are highly contagious. "People tend to be the most contagious before they develop symptoms, if they're going to develop symptoms," he said in a recent CNN article.
Dentists are turning to extraoral suction devices like the AeroShield™ FLOW to help manage bioaerosols. Dental workers are among those who are at the highest risk of getting the virus, according to the U.S. Department of Labor’s Occupational Safety and Health Administration. “We know that prolonged close contact is associated with the transmission of SARS-CoV-2,” said Margaret Scarlett, a dentist and consultant who worked at the Centers for Disease Control and Prevention for more than 20 years writing infection-control guidelines. ... Dental workers spend a lot of time within 12 to 18 inches of a patient’s face, and their repertoire is chock-full of procedures that create splatter and aerosols. Commonly used teeth-cleaning devices like ultrasonic scalers are well-known aerosol generators, as are the dental drills used in crown procedures and filling cavities. Dr. Froum acknowledged that the changes have added significant expenses to his practice. But at the end of the day, it needs to be done.“That’s just the cost of business for us,” he said.
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