By Dennis Thompson
HealthDay Reporter
MONDAY, May 4, 2020 (HealthDay News) — Many U.S. states are preparing to emerge from their quarantine cocoons, hoping to get their economies back on track.
But experts are concerned that these states have not yet created the public health infrastructure needed to safely reopen without causing a second wave of COVID-19 infections.
In particular, tens of thousands of new public health workers trained in contact tracing are needed to have any hope of heading off future outbreaks in local communities, warned Crystal Watson, a senior scholar with the Johns Hopkins Center for Health Security.
Contact tracing “is the best tool we have to manage this in an ongoing way and allow our economy to open up again,” said Watson, who recently co-authored a major report on public health’s ongoing role in reopening America.
Watson estimates that the United States will need at least 100,000 workers trained in contact tracing across the nation, at a bare minimum, to keep COVID-19 at a manageable level.
There are currently around 30,000 contact tracers, Watson said. That might sound like not much, but it’s better than what it was at the start of this national emergency, when there were only 2,200 trained contact tracers in state health departments around the United States.
Last week the tri-state area of New York, New Jersey and Connecticut announced plans to build a nation-leading force of 6,400 to 17,000 contact tracers — a baseline of 30 tracers for every 100,000 that can be expanded if COVID-19 cases start to surge.
“One of the most important steps to take to reopen the economy as safely as possible is to create a system of contact tracing. When social distancing is relaxed, contact tracing is our best hope for isolating the virus when it appears — and keeping it isolated,” former New York City Mayor Michael Bloomberg, who is helping lead the effort, said in a statement.
How contact tracing works
Contact tracing is essentially detective work, experts said.
“It is used to break chains of transmission, to manage epidemics of this virus at an ongoing low level, to prevent future waves or surges of cases, and to enable us to get back to work in a much safer way,” Watson said.
Continued
The use of contact tracing is one of the oldest public health tactics, dating back centuries, said Lori Tremmel Freeman, chief executive officer for the National Association of County and City Health Officials.
“It means that as soon as you know of a person who may have a virus or have tested presumptive positive, you work immediately to first isolate that person so they do not spread it further,” Freeman said. “You keep them away from other people, and then you work with that person directly to understand who they have come in contact with.”
Contact tracers wind up tracking a “spider web of transmission,” following a pathogen like the coronavirus as it spreads from person to person. Each person who’s been infected is asked about their contacts, and then those contacts are approached.
Contact tracing hasn’t been a widely implemented strategy in the COVID-19 response because the epidemic surged quickly and there were not enough tests available to figure out exactly who carried the virus, experts say.
Because of that, states were forced to use the blunt public health instrument of social isolation and shutdo