Viral Infections in Healthy and Immunocompromised Hosts
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|ClinicalTrials.gov Identifier: NCT01306084|
Recruitment Status : Recruiting
First Posted : March 1, 2011
Last Update Posted : May 25, 2022
- Viral infections are an important cause of illness and death in hospitalized patients as well as outpatients. New strains of viruses may appear and infect both healthy people and those with weak immune systems. A better understanding of these new virus strains (such as SARS-CoV-2, the virus that causes COVID-19) may help to control and prevent these infections. In particular, some viral infections that are less problematic in healthy persons can be life threatening in persons with weak immune systems, and viruses may be able to evolve more rapidly in persons with weak immune systems and therefore develop resistance to existing treatments. Researchers are interested in collecting samples and information from otherwise healthy persons or persons with weak immune systems to study the effects of viruses and their development.
- To collect samples and data from individuals who have been exposed to or have contracted viral infections.
- Individuals of all ages who have been diagnosed with a viral infection are suspected to have a viral infection, or have been in close contact with someone with a suspected or actual viral infection that is of interest to investigators in the Laboratory of Infectious Diseases.
- Healthy persons and persons with weak immune systems (immunocompromised individuals) are eligible to participate.
- Participants will be pre-screened to determine if they meet the eligibility criteria for the trial.
- If eligible, evaluation may include a medical chart review, a history and physical examination, review of clinical reports from outside hospitals and laboratories, and review of tissue biopsies.
- Study procedures may include collection of blood, urine, saliva, nasal fluid sampling, throat swabs, stool, and genital swabs. For participants who have specimens collected as part of their medical care (e.g. wound swabs, spinal tap, bronchoscopy, liver biopsy etc.), researchers may use leftover specimens from the clinical laboratory for testing.
- Specimens may be collected up to 4 times per week during the first 2 weeks after enrollment, and then as many as 2 times per week for up to 2 years. Some participants may be asked to continue providing specimens if there is concern for relapse or recurrence of the infection.
- Treatment is not offered under this study.
|Condition or disease|
|Anogenital Herpes COVID-19 Herpes Labialis|
Viral infections are an important cause of morbidity and mortality in hospitalized patients as well as out-patients. New strains of viruses may appear and cause epidemics in healthy persons or immunocompromised persons. A better understanding of these new virus strains may help to control and prevent these infections. Some viral infections that would otherwise be asymptomatic or cause mild disease can be life threatening in immunocompromised persons.
Immunocompromised persons often shed high titers of virus for prolonged periods of time. In the absence of a potent immune system, viruses may evolve more rapidly in their hosts.
Therefore, analysis of sequential virus specimens from these patients can provide information on virus evolution, including how resistance to antiviral agents can develop. In addition, higher titers of virus may be associated with virus mutants that are more adapted to grow in cell culture. In this protocol we will obtain specimens containing viruses from otherwise healthy or immunocompromised patients over sequential periods of time to study their nucleic acid sequences, sensitivity to antiviral agents, cell types infected by the virus, and ability to grow in cell culture. In some cases, we weill review tissue biosies or clinical reports from outside laboratories to assist with the diagnosis of virus-associated diseases. We will also record the patient s signs and symptoms, note results of any pertinent laboratory work-up, and in some cases, obtain blood to measure immune responses, isolate antibodies, or virus-specific T cells, or to look for viremia. This study should provide further understanding on how viruses evolve in their natural hosts, how they become resistant to antiviral agents, how antibody responses evolve to viruses, and might allow some currently uncultivatable viruses to be grown in cell culture.
|Study Type :||Observational|
|Estimated Enrollment :||1000 participants|
|Official Title:||Viral Infections in Healthy and Immunocompromised Hosts|
|Actual Study Start Date :||March 15, 2011|
NIH campus employees who have recently recovered from COVID-19
Clinical Center health care workers and ancillary staff who have close patient contact and possible exposures to SARS-CoV-2
Healthy and immunocompromised subjects who have or are suspected to have a viral infection
Healthy and immunocompromised subjects exposed to someone who has a viral infection or is suspected of having a viral infection
Healthy subjects who grew up in dengue endemic areas.
Healthy subjects with a history of viral hepatitis
- Sample collection, analysis of immune function, or review of tissue biopsies or clinical reports from outside laboratories in designated populations with viral infections, suspected of having a viral infection, recovered from a viral infection o... [ Time Frame: open-ended ]January 2031
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01306084
|Contact: Jeffrey I Cohen, M.D.||(301) firstname.lastname@example.org|
|United States, Maryland|
|National Institutes of Health Clinical Center, 9000 Rockville Pike||Recruiting|
|Bethesda, Maryland, United States, 20892|
|Contact: For more information at the NIH Clinical Center contact Office of Patient Recruitment (OPR) 800-411-1222 ext TTY8664111010 email@example.com|
|Principal Investigator:||Jeffrey I Cohen, M.D.||National Institute of Allergy and Infectious Diseases (NIAID)|