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contact tracing
Indications:
- contact tracing can identify persons with transmissible infectious disease
- contact tracing slow spread of COVID-19 Close contact risk factors:
- - spending >= 15 minutes cumulative within 6 feet of an infected person in a 24 hour period defines "close contact" & risk for COVID-19 [2]
- 6% of household contacts develop symptoms & test positive, vs 1% of work or social contacts
- sharing a bedroom or a vehicle with a case
- being spoken to by a case within 2 meters, especially for > 30 minutes
General
clinical procedure
References
- Ng OT, Marimuthu K, Koh V et al
SARS-CoV-2 seroprevalence and transmission risk factors among high-risk
close contacts: a retrospective cohort study.
Lancet Infectious Diseases. 2020 Nov 3
https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(20)30833-1/fulltext
- American Medical Association
CDC issues new guidance that expands definition of "close contact" for
purposes of determining who is at risk for SARS-CoV-2 infection.
AMA Morning Rounds. Oct 22, 2020
- Lou N
'Close Contact' Redefined; Vax Theft Worries; Docs Sans Masks -
A daily roundup of news on COVID-19 and the rest of medicine.
MedPage Today October 22, 2020
https://www.medpagetoday.com/infectiousdisease/covid19/89260
- Pringle JC, Leikauskas J, Ransom-Kelley S, et al.
COVID-19 in a Correctional Facility Employee Following Multiple Brief
Exposures to Persons with COVID-19 - ermont, July - August 2020.
MMWR Morb Mortal Wkly Rep. ePub: 21 October 2020
PMID: 33119564 Free article
https://www.cdc.gov/mmwr/volumes/69/wr/mm6943e1.htm
- Centers for Disease Control & Prevention (CDC)
Contact Tracing
https://www.cdc.gov/coronavirus/2019-ncov/daily-life-coping/contact-tracing.html