*For the aim of this steerage, fever is outlined as subjective fever (feeling feverish) or a measured temperature of 100.4°F (38°C) or larger. Note that fever could also be intermittent or will not be current in some folks, reminiscent of those that are aged, immunocompromised, or taking sure fever-reducing drugs (e.g., nonsteroidal anti-inflammatory medicine [NSAIDS]).
** Data to tell the definition of shut contact are restricted. Factors to contemplate when defining shut contact embody proximity, the period of publicity (e.g., longer publicity time probably will increase publicity danger), and whether or not the publicity was to an individual with signs (e.g., coughing probably will increase publicity danger). While analysis signifies material face coverings could assist those that are contaminated from spreading the an infection, there’s much less info relating to whether or not material face coverings provide any safety for a contact uncovered to a symptomatic or asymptomatic affected person. Therefore, the dedication of shut contact needs to be made no matter whether or not the individual with COVID-19 or the contact was sporting a material face masking. Because most of the people has not acquired coaching on correct choice and use of respiratory PPE, it can’t be sure whether or not respiratory PPE worn throughout contact with a person with COVID-19 an infection protected them from publicity. Therefore, as a conservative method, the dedication of shut contact ought to usually be made no matter whether or not the contact was sporting respiratory PPE, which is really useful for well being care personnel and different educated customers, or a material face masking really useful for most of the people.
***Data are inadequate to exactly outline the period of time that constitutes a chronic publicity. Recommendations range on the size of time of publicity, however 15 minutes of shut publicity can be utilized as an operational definition. Brief interactions are much less more likely to lead to transmission; nevertheless, signs and the kind of interplay (e.g., did the contaminated individual cough instantly into the face of the uncovered particular person) stay necessary.
Integration of those definitions and actions into communications and actions of public well being authorities could be guided by CDC’s “Implementation of Mitigation Strategies for Communities with Local COVID-19 Transmissionpdf icon”