*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 individuals, equivalent to 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 possible will increase publicity threat), and whether or not the publicity was to an individual with signs (e.g., coughing possible will increase publicity threat). While analysis signifies fabric face coverings might assist those that are contaminated from spreading the an infection, there may be much less data concerning whether or not fabric face coverings supply any safety for a contact uncovered to a symptomatic or asymptomatic affected person. Therefore, the dedication of shut contact ought to be made regardless of whether or not the particular person with COVID-19 or the contact was sporting a fabric face masking. Because most people has not obtained 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 typically be made regardless of whether or not the contact was sporting respiratory PPE, which is really useful for well being care personnel and different skilled customers, or a fabric face masking really useful for most people.
***Data are inadequate to exactly outline the period of time that constitutes a protracted publicity. Recommendations differ 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 particular person 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 might be guided by CDC’s “Implementation of Mitigation Strategies for Communities with Local COVID-19 Transmissionpdf icon”