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MERS- CoV : example of hospital cluster

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MERS- CoV : example of hospital cluster. Republic of Lebanon Ministry of Public Health Epidemiological Surveillance Program May 2014. Source. Hospital Outbreak of Middle East Respiratory Syndrome Coronavirus.

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  1. MERS-CoV: example of hospital cluster Republic of Lebanon Ministry of Public Health Epidemiological Surveillance Program May 2014

  2. Source • Hospital Outbreak of Middle East Respiratory Syndrome Coronavirus. • A. Assiri, A. McGeer, T. M. Perl, C. S. Price, A. Al Rabeeah, D. Cummings, Z. Alabdullatif, M. Assad, A. Almulhim, H. Makhdoom, H. Madani, R. Alhakeem, J. Al-Tawfiq, M. Cotten, S. Watson, P.Kellam, A.Zumla, and Z. Memish, for the KSA MERS-CoV Investigation Team • n engl j med 369;5 nejm.org august 1, 2013

  3. Summary 1 • Between April 1 and May 23, 2013, 23 cases of MERS-CoV infection were reported in the eastern province of Saudi Arabia. • Symptoms included: • 87%: fever • 87%: cough • 87%: abnormal chest radiographs • 48%: shortness of breath • 35%: gastrointestinal symptoms • As of June 12: • 65%: died • 26%: recovered • 9%: remained hospitalized • The median incubation period was 5.2 days, 95% CI, [1.9 to 14.7]

  4. Summary 2 • A total of 21 of the 23 cases were acquired by person-to-person transmission: • In hemodialysis units • Or in intensive care units • Or in-patient units in three different health care facilities. • Sequencing data from four isolates revealed a single monophyletic clade. • Among 217 household contacts identified, MERS-CoV infection developed in: • 5 family members (3 with laboratory-confirmed cases). • Among more than 200 health care worker contacts identified, MERS-CoV infection developed in: • 2 health care workers (both with laboratory-confirmed cases).

  5. By time

  6. General cluster

  7. Dialysis cluster

  8. ICU cluster

  9. Medical ward

  10. Health care provider

  11. Other health facilities

  12. Family cluster

  13. Laboratory testing • Laboratory testing for MERS-CoV remains a challenge. • Validated serologic assays are not yet available. • In this cluster, • Results of throat swabs were occasionally negative and repeat testing for MERS-CoV was required. • It seems prudent to conclude that one cannot reliably rule out MERS-CoV disease on the basis of a single negative test when a patient presents with the appropriate clinical syndrome and epidemiologic exposure. • There is evidence that repeat testing and tests on sputum or bronchoalveolar-lavage fluid are of value in improving diagnostic accuracy.