As of July 2020, widespread community transmission of SARS-CoV-2 has been documented in geographically dispersed regions. By mid-March, multiple areas in the United States reported cases with no direct epidemiologic link to confirmed cases. Most cases in China occurred in households and in Washington, for example, a significant cluster was associated with a long-term care facility. cases in early March 2020 were clustered. Disease in children mostly appears to be relatively mild, and there is growing evidence that a significant proportion of infections across all age groups are asymptomatic.Ĭases of COVID-19 in China and the initial U.S. Those at highest risk for severe disease and death include people aged over 60 years (especially those 85 years and older) and those with underlying conditions such as obesity, hypertension, diabetes, cardiovascular disease, chronic respiratory or kidney disease, immunosuppression from solid organ transplant, and sickle cell disease. At the beginning of the pandemic, everyone was assumed to be susceptible it is now known that there are risk factors that increase an individual’s illness severity. The extent of long-term immunity from anamnestic responses is unknown currently. ![]() Initial seroconversion, including neutralizing antibodies, has been documented and there is some evidence that immunity to SARS-CoV-2 re-challenge during early convalescence is likely. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a newly identified pathogen and it is assumed there is no pre-existing human immunity to the virus. Early epidemiologic findings indicate COVID-19 may be less severe 1 than SARS or MERS, but evidence suggests that the virus is more contagious than its predecessors. The virus is distinct from both severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV), although closely related. In late December 2019, investigation of a cluster of pneumonia cases of unknown origin in Wuhan, China resulted in identification of a novel coronavirus. Surveillance case definitions are not intended to be used by healthcare providers for making a clinical diagnosis or determining how to meet an individual patient’s health needs. Surveillance case definitions enable public health officials to classify and count cases consistently across reporting jurisdictions. Event Codes & Other Surveillance ResourcesĢ020 Interim Case Definition, Approved AugNOTE: A surveillance case definition is a set of uniform criteria used to define a disease for public health surveillance.HL7 Implementation & Onboarding Technical Assistance plus icon.Supporting Documents for Implementation. ![]() HL7 Message Mapping Guides & Standards plus icon.About Notifiable Noninfectious Diseases and Conditions Data.Notifiable Noninfectious Disease Data Tables plus icon.About Weekly and Quarterly Tables (Provisional).About Notifiable Infectious Diseases and Conditions Data.Notifiable Infectious Disease Data Tables plus icon.VIDEO: New lab equipment improves disease detection in U.S. ![]() VIDEO: Courier service impacts public health in Utah.VIDEO: What caused a waterborne outbreak in Tennessee?.VIDEO: Stopping diseases caused by mosquitoes in Arizona.VIDEO: Modernizing disease surveillance in California.NNDSS Data Power Hepatitis A Outbreak Response.Integrated Surveillance Information Systems/NEDSS.How We Conduct Case Surveillance plus icon.
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