View clinical trials related to Chickenpox.
Filter by:Herpes Zoster (shingles) is caused by reactivation of latent varicella zoster virus (VZV) that usually occurs decades following initial exposure. The risk of developing shingles increases with age. Shingles presents as a painful, itchy blistering rash that usually involves a single portion of the skin and lasts about 7-10 days. The risk of developing shingles increases with age in healthy people, and has been shown in some studies to be increased in people with rheumatoid arthritis and other autoimmune diseases. Zostavax, a live-attenuated vaccine against the varicella zoster virus, was first approved by the FDA for the prevention of Shingles among people 60 years and older, and is now approved for use in people aged 50 years and older. Because rheumatoid arthritis and some of the medications used to treat rheumatoid arthritis can impair the body's immune system, it is not known how much of an immune response can be generated in people with rheumatoid arthritis. The goals of this study are to measure the immune response after standard vaccination with Zostavax in people with rheumatoid arthritis in comparison to people with healthy immune systems. All participants will be 50 years old or older, and subjects with rheumatoid arthritis will not be eligible if they are taking certain biologic medications, including TNF inhibitors (Etanercept or Adalimumab). Ten healthy subjects and 10 subjects with rheumatoid arthritis will all receive a single vaccination with Zostavax, then will be followed for 12 weeks to assess the immune response and for the development of local rash or other potential side effects.
The purpose of this study is to assess the immunogenicity and safety of GSK Biologicals' investigational measles, mumps, rubella and varicella (MMRV) vaccine (GSK208136, PriorixTetra™) when co-administered along with conjugated Meningococcal C (MenC) vaccine (Meningitec®, Nuron Biotechs' Vaccine) in healthy children.
An open-label, multicenter study to evaluate the safety and immunogenicity of inactivated VZV vaccine (V212) in participants with hematologic malignancies (HM) who are currently receiving anti-CD20 monoclonal antibodies. The primary hypothesis is that vaccination with V212 vaccine will elicit significant VZV-specific immune responses at ~28 days after vaccination 4. The statistical criterion for significance requires that the lower bound of the 2-sided 90% confidence interval of the geometric mean fold rise in immune response in V212 recipients is >1.0.
The purpose of this post-marketing surveillance study is to collect and assess information on safety and efficacy of valaciclovir in pediatric patients with chickenpox
After immunization, particularly in older persons, some people are protected from disease by a vaccine and others are not. The investigators believe that this variable response may be due to overproduction of molecules that suppress development of immunity (antibodies and cell mediated immunity). Normally, these molecules are produced to make sure that immunity is regulated in just the right way for the body as a whole, and to prevent autoimmune disease. However, with aging, the immune system may have difficulty in proper immune regulation. Over production of immunosuppressive molecules after vaccination may interfere with the effects of a vaccine. For example when elderly individuals are immunized against zoster with a licensed vaccine, Zostavax, the vaccine is effective in only about 50 to 60%. The investigators will compare blood levels of antibodies, cellular immunity, and immunosuppressive molecules in recipients of Zostavax to see if there is a correlation between development low immunity and high levels of immunosuppressive molecules.
This is an ancillary study to a randomized controlled trial of high dose vitamin D in older long-term care residents (NCT01102374). In this study, a subset of trial subjects will receive the zoster vaccine and the investigators will determine the immunological response to the vaccine in this older, frail population, as well as the association between vitamin D and immunological outcomes.
The aim of the study is to investigate the memory immune response and the yearly persistence of the immunity against Japanese Encephalitis (JE) after vaccination with Japanese Encephalitis Chimeric Virus Vaccine (JE-CV) in participants previously vaccinated with JE-CV vaccine. Objectives: - To describe JE immune status before and after JE-CV vaccination in subjects previously vaccinated with JE-CV vaccine - To describe the immune status before and after JE-CV vaccination in JE-naïve control subjects. - To describe the safety (in terms of solicited and unsolicited adverse events) of a single dose of JE-CV vaccine up to 6 months after the last vaccination. - To describe all related serious adverse events (SAEs) and related deaths from 6 months to 5 years after vaccination in JE-CV-primed subjects.
The purpose of this study is to determine the seroprevalence of Hepatitis A Virus (HAV), Varicella-Zoster virus (VZV), Cytomegalovirus (CMV), Herpes Simplex (HSV) and Bordetella pertussis (BP)infections in Mexico.
To study about the immunogenicity, safety and efficacy of varicella-zoster virus vaccine in HIV-infected children.
A Study comparing three different doses of ProQuad to concomitant administration of M-M-R II and PUVV (Process Upgrade Varicella Vaccine) vaccines.