CDC Updates Interim U.S. Surveillance Case Definition for Severe Acute Respiratory Syndrome (SARS)
The Centers for Disease Control and Prevention has added laboratory criteria for evidence of infection with the SARS-associated coronavirus (SARS-CoV) to its interim surveillance case definition. CDC Director Dr. Julie L. Gerberding announced a new category, laboratory-confirmed, at a Senate committee hearing on SARS on Tuesday.
A total of 274 cases of SARS have been reported in the United States; 222 are suspect cases and 52 are probable. Of the 52 probable SARS cases reported as of April 29, 2003, 6 are laboratory-confirmed using the new laboratory criteria. Twelve cases are considered probable, but are not laboratory-confirmed, either because the laboratory tests are not sensitive enough to pick up the SARS virus or because the illness was not caused by SARS virus. Laboratory results are undetermined for the remaining 34 probable cases; for some, testing is in progress and for others suitable specimens are not available for testing.
Using the new laboratory criteria, a SARS case is laboratory-confirmed if one of the following is met:
detection of antibody to SARS-CoV by indirect fluorescent antibody (IFA) or enzyme-linked immunosorbent assay (ELISA)
isolation of SARS-CoV in tissue culture
detection of SARS-CoV RNA by reverse transcriptase-polymerase chain reaction (RT-PCR), which must be confirmed by a second PCR test
Negative laboratory results for PCR, viral culture, or antibody tests obtained within 21 days of illness do not rule out coronavirus infection. In these cases, an antibody test of a specimen obtained more than 21 days after illness begins is needed to determine infection.
Most U.S. cases of SARS continue to be associated with travel; a small number of cases have resulted from secondary spread to household members or health care workers. CDC will continue to update the SARS case definition as new data become available, or if there are changes in the spread of SARS illness in the United States.
For more information about the SARS case definitions, see the CDC web site at http://www.cdc.gov.
# # #
CDC protects people's health and safety by preventing and controlling diseases and injuries; enhances health decisions by providing credible information on critical health issues; and promotes healthy living through strong partnerships with local, national, and international organizations.
and connect with fellow professionals
At DoveMed, our utmost priority is your well-being. We are an online medical resource dedicated to providing you with accurate and up-to-date information on a wide range of medical topics. But we're more than just an information hub - we genuinely care about your health journey. That's why we offer a variety of products tailored for both healthcare consumers and professionals, because we believe in empowering everyone involved in the care process.
Our mission is to create a user-friendly healthcare technology portal that helps you make better decisions about your overall health and well-being. We understand that navigating the complexities of healthcare can be overwhelming, so we strive to be a reliable and compassionate companion on your path to wellness.
As an impartial and trusted online resource, we connect healthcare seekers, physicians, and hospitals in a marketplace that promotes a higher quality, easy-to-use healthcare experience. You can trust that our content is unbiased and impartial, as it is trusted by physicians, researchers, and university professors around the globe. Importantly, we are not influenced or owned by any pharmaceutical, medical, or media companies. At DoveMed, we are a group of passionate individuals who deeply care about improving health and wellness for people everywhere. Your well-being is at the heart of everything we do.
0 Comments
Please log in to post a comment.