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Environmental Enterovirus Monitoring

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified April 2005 by National Taiwan University Hospital.
Recruitment status was:  Recruiting
Information provided by:
National Taiwan University Hospital Identifier:
First received: September 12, 2005
Last updated: NA
Last verified: April 2005
History: No changes posted
From last decades, because of lacking the powerful quantitative methods, such as real-time qPCR, there is no environmental monitoring data about enterovirus transmission. If the major transmission routes and risk factor are still not clear, it will be very hard for making the prevention and control strategies. Today, the most popular prevention suggestion for children is keeping them away from crowded public places during the peak contagious season, because enteroviruses are easily transmitted through aerosols over a distance of meters, and even between separated rooms (Chang et al., 2004). However, adults may as easily be infected, but don』t have any disease symptoms or carry the virus home. Another recommendation is washing hands to avoid contact of hands or anything else with the mouth and nose, as it is through contact of viruses with the mucosal membranes in the mouth and nasal passages that infection occurs. However, these actions did not be great helpful for preventing enterovirus infection and spread. Understanding and disrupting the major transmission pass way of enterovirus could be more effective than just keeping personal hygiene. Therefore, an applicable environmental monitoring program is needed for understanding the transmission routes and risk factor of enterovirus infection. In this study, we will monitor enteroviruses in hospital, household and kindergarten. For the environmental monitoring of enteroviruses, we will apply traditional plaque assay, real-time quantitative PCR and combine with questionnaire-based interviews to understand the infectious types and concentration of enterovirus from indoor air, surface and water for recognizing the transmission routes of enterovirus and the relationships between virus concentration and the symptoms of the cases.

Transmission Condition

Study Type: Observational
Study Design: Primary Purpose: Screening
Time Perspective: Cross-Sectional
Time Perspective: Prospective
Official Title: Environmental Enterovirus Monitoring

Further study details as provided by National Taiwan University Hospital:

Estimated Enrollment: 50
Study Start Date: May 2005
Estimated Study Completion Date: June 2005
Detailed Description:
Environmental Monitoring Program for Enterovirus (1) Case Collection. The studies cases include patients who were suspected of having enterovirus illnesses, such as HFMD and herpangina. Institutional review board approval was obtained from the Hospital for this study and informed consent was obtained from all patients or their parents. (2) Questionnaire. questionnaire based interviews were used to collect information about the family members, including demographic data, the number of bedrooms in the house, amount of contact time with the patient, presence and pattern of current or recent signs and symptoms. (3) Patient and culture samples. Laboratory evidence of enterovirus infection was defined as the isolation of enterovirus from a throat , and rectal swab sample. (4) Environmental Sampling. (a) Air sampling. For the filter/real-time qPCR assay, the air in each ward was filtered through a 37-mm-diameter Nuclepore filter (Costar, Cambridge, MA), which is a track-etched polycarbonate filter consisting of a polycarbonate membrane with straight-through pores of uniform size (0.4 μm). The filters were supported by cellulose pads and loaded into open-face three-piece plastic cassettes. The pump and filter apparatus were placed within 1 m from the patient’s bed on an adjacent nightstand. (b) Surface sampling Regarding surface sampling, surfaces of environment and equipment were sampled with moistened sterile cotton swabs.

Ages Eligible for Study:   up to 18 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • any case of enterovirus infection

Exclusion Criteria:

  • not enterovirus infection cases
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00173121

Contact: Luan-Yin Chang, MD 886-2-23123456 ext 3245

National Taiwan University Hsopital Recruiting
Taipei, Taiwan, 100
Contact: Luan-Yin Chang, MD, PhD   
Principal Investigator: Luan-Yin Chang, MD, PhD         
Sponsors and Collaborators
National Taiwan University Hospital
Principal Investigator: Luan-Yin Chang Chang, MD, PhD National Taiwan University Hospital
  More Information Identifier: NCT00173121     History of Changes
Other Study ID Numbers: 9461700414
Study First Received: September 12, 2005
Last Updated: September 12, 2005

Keywords provided by National Taiwan University Hospital:
enterovirus, environment, aerosol, air

Additional relevant MeSH terms:
Enterovirus Infections
Picornaviridae Infections
RNA Virus Infections
Virus Diseases processed this record on September 21, 2017