I was somewhat surprised to hear that contract tracers are instructed to disregard contacts between an known infected person (positive tested) person and their contacts if the duration of a contact is less than 10 minutes (and distance is less than 6 feet)
Considering that the virus is capable of being transmitted by a simple handshake, and because a handshake only takes seconds, a restriction on time duration may be counter productive.*
The only CDC guidance I can find here suggests the criteria should be <6ft for a "prolonged period of time", then goes on to say in a note: "Data are insufficient to precisely define the duration of time that constitutes a prolonged exposure. Recommendations vary on the length of time of exposure from 10 minutes or more to 30 minutes or more."
IMO, that does not appear to be a sound criteria (as to duration) to define a non-healthcare environment person-to-person contact with a known positive.
So my question is: Are there any other (new and improved???) CDC guidance documents that might alter that "prolonged contact" recommendation, perhaps even discussing the nature of the contact when less than 6 feet.
- counter productive in that it could impart a false sense of security, by not informing a contact that they were potentially exposed to a transmitter.
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