SrasV1, 2020, Analysis, bibRecord, 000B09

Escalating infection control response to the rapidly evolving epidemiology of the coronavirus disease 2019 (COVID-19) due to SARS-CoV-2 in Hong Kong

Identifieur interne : 000B09 ( 2020/Analysis ); précédent : 000B08; suivant : 000B10

Escalating infection control response to the rapidly evolving epidemiology of the coronavirus disease 2019 (COVID-19) due to SARS-CoV-2 in Hong Kong

Source :

Infection Control and Hospital Epidemiology [ 0899-823X ] ; ????.

RBID : PMC:7137535

Abstract

Objective:

To describe the infection control preparedness measures undertaken for coronavirus disease (COVID-19) due to SARS-CoV-2 (previously known as 2019 novel coronavirus) in the first 42 days after announcement of a cluster of pneumonia in China, on December 31, 2019 (day 1) in Hong Kong.

Methods:

A bundled approach of active and enhanced laboratory surveillance, early airborne infection isolation, rapid molecular diagnostic testing, and contact tracing for healthcare workers (HCWs) with unprotected exposure in the hospitals was implemented. Epidemiological characteristics of confirmed cases, environmental samples, and air samples were collected and analyzed.

Results:

From day 1 to day 42, 42 of 1,275 patients (3.3%) fulfilling active (n = 29) and enhanced laboratory surveillance (n = 13) were confirmed to have the SARS-CoV-2 infection. The number of locally acquired case significantly increased from 1 of 13 confirmed cases (7.7%, day 22 to day 32) to 27 of 29 confirmed cases (93.1%, day 33 to day 42; P < .001). Among them, 28 patients (66.6%) came from 8 family clusters. Of 413 HCWs caring for these confirmed cases, 11 (2.7%) had unprotected exposure requiring quarantine for 14 days. None of these was infected, and nosocomial transmission of SARS-CoV-2 was not observed. Environmental surveillance was performed in the room of a patient with viral load of 3.3 × 10⁶ copies/mL (pooled nasopharyngeal and throat swabs) and 5.9 × 10⁶ copies/mL (saliva), respectively. SARS-CoV-2 was identified in 1 of 13 environmental samples (7.7%) but not in 8 air samples collected at a distance of 10 cm from the patient’s chin with or without wearing a surgical mask.

Conclusion:

Appropriate hospital infection control measures was able to prevent nosocomial transmission of SARS-CoV-2.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7137535

DOI: 10.1017/ice.2020.58
PubMed: 32131908
PubMed Central: 7137535

Affiliations:

République populaire de Chine

Links to Exploration step

PMC:7137535

Le document en format XML

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,<city>Hong Kong Special Administrative Region</city>
,<country>China</country>
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<country xml:lang="fr">République populaire de Chine</country>
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,<city>Hong Kong Special Administrative Region</city>
,<country>China</country>
</nlm:aff>
<country xml:lang="fr">République populaire de Chine</country>
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,<city>Hong Kong Special Administrative Region</city>
,<country>China</country>
</nlm:aff>
<country xml:lang="fr">République populaire de Chine</country>
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<front><div type="abstract" xml:lang="en"><sec id="as1"><title>Objective:</title>
<p>To describe the infection control preparedness measures undertaken for coronavirus disease (COVID-19) due to SARS-CoV-2 (previously known as 2019 novel coronavirus) in the first 42 days after announcement of a cluster of pneumonia in China, on December 31, 2019 (day 1) in Hong Kong.</p>
</sec>
<sec id="as2"><title>Methods:</title>
<p>A bundled approach of active and enhanced laboratory surveillance, early airborne infection isolation, rapid molecular diagnostic testing, and contact tracing for healthcare workers (HCWs) with unprotected exposure in the hospitals was implemented. Epidemiological characteristics of confirmed cases, environmental samples, and air samples were collected and analyzed.</p>
</sec>
<sec id="as3"><title>Results:</title>
<p>From day 1 to day 42, 42 of 1,275 patients (3.3%) fulfilling active (n = 29) and enhanced laboratory surveillance (n = 13) were confirmed to have the SARS-CoV-2 infection. The number of locally acquired case significantly increased from 1 of 13 confirmed cases (7.7%, day 22 to day 32) to 27 of 29 confirmed cases (93.1%, day 33 to day 42; <italic>P</italic>
 < .001). Among them, 28 patients (66.6%) came from 8 family clusters. Of 413 HCWs caring for these confirmed cases, 11 (2.7%) had unprotected exposure requiring quarantine for 14 days. None of these was infected, and nosocomial transmission of SARS-CoV-2 was not observed. Environmental surveillance was performed in the room of a patient with viral load of 3.3 × 10<sup>6</sup>
 copies/mL (pooled nasopharyngeal and throat swabs) and 5.9 × 10<sup>6</sup>
 copies/mL (saliva), respectively. SARS-CoV-2 was identified in 1 of 13 environmental samples (7.7%) but not in 8 air samples collected at a distance of 10 cm from the patient’s chin with or without wearing a surgical mask.</p>
</sec>
<sec id="as4"><title>Conclusion:</title>
<p>Appropriate hospital infection control measures was able to prevent nosocomial transmission of SARS-CoV-2.</p>
</sec>
</div>
</front>
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Escalating infection control response to the rapidly evolving epidemiology of the coronavirus disease 2019 (COVID-19) due to SARS-CoV-2 in Hong Kong

Escalating infection control response to the rapidly evolving epidemiology of the coronavirus disease 2019 (COVID-19) due to SARS-CoV-2 in Hong Kong

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Abstract

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