There are about 244 clinical studies being (or have been) conducted in Costa Rica. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
This is a follow-up of the primary series vaccination schedule in Study A3L24 (NCT01177722). The objectives are: - To describe the antibody persistence to any antigen contained in the investigational DTaP-IPV-Hep B-PRP-T vaccine and Infanrix hexa™ prior to the booster dose - To describe the safety and immunogenicity of the booster dose of either DTaP-IPV-Hep B-PRP-T or Infanrix hexa™ vaccine. - To describe the immunogenicity of a booster dose of Prevenar™ given at 12 to 24 months.
This study will describe the long-term safety and effectiveness, treatment patterns,and patient reported quality of life associated with ranibizumab treatment in routine clinical practice for all approved indication included in the local product label.
The primary objective of this trial is to continue the provision of darunavir/ low-dose ritonavir (DRV/rtv) to adult and pediatric patients who previously received DRV/rtv in the clinical trials TMC114-C211, TMC114-C214, TMC114-TiDP31-C229 or in the pediatric trial TMC114-TiDP29-C232 who continue to benefit from the use of darunavir in combination with low-dose ritonavir (DRV/rtv), in countries where DRV is not commercially available for the subject, is not reimbursed, or cannot be accessed through another source (e.g., access program, governmental program) and to provide DRV through this trial until the participants can switched to locally available DRV-based treatment regimens (that is commercially available and reimbursed, or accessible through another source [for example, access program or government program]) or to local standard of care, as appropriate.
The purpose of this study is to generate immunogenicity and safety data of an investigational hexavalent DTaP-IPV-Hep B-PRP-T vaccine compared to a control vaccine, Infanrix hexa™ when given along with Prevenar™ and Rotarix™ vaccines. Primary Objectives: - To demonstrate the equivalence of immunogenicity of 3 lots of DTaP-IPV-Hep B-PRP-T vaccine 1 month after a 3-dose primary series (2, 4 and 6 months) when given with Prevenar™ and Rotarix™, in terms of immunoresponses. - To demonstrate the non-inferiority of the hexavalent DTaP-IPV-Hep B-PRP-T vaccine to the licensed hexavalent Infanrix hexa vaccine when given with Prevenar™ and Rotarix™. Secondary Objectives: - To describe in each group the immunogenicity parameters for all antigens for each vaccine - To assess the safety profile in terms of solicited and unsolicited adverse events and serious adverse events in each group for each vaccine.
Background: - Most studies of infectious agents have focused on specific microbes, such as human papillomaviruses and cervical cancer, and the hepatitis B and C virus and liver cancer. The skin and many internal areas (including the mouth and the gastrointestinal tract) also contain large numbers of naturally occurring microbes, but these areas have not received as much study. - Some of the infectious agents that naturally reside in the body may have an effect on health. The study of naturally occurring microbes in the human body is a new area of research, and much remains to be learned regarding the extent and pattern of their appearance and appropriate techniques for testing them. - Researchers are interested in collecting human samples from areas known to contain naturally occurring microbes. These samples will provide baseline information for further studies. Objectives: - To collect a set of study samples from individuals who have applied to participate in a study assessing the relationship among the bacteria H. pylori, peptic ulcer disease, and gastric cancer. Eligibility: - Individuals between the ages of 21 and 65 who are participating in the clinical trial entitled A Phase III Randomized Trial of Three Antibiotic Regimens to Eradicate Helicobacter Pylori. Design: - Researchers will collect oral (saliva), colonic, and skin swab samples from study participants who tested positive for the presence of the H. pylori bacteria. These samples will be collected at the three study visits (enrollment, 6 weeks, and 1 year). - Researchers will also collect samples from people who applied for the clinical trial but did not test positive for H. pylori. These samples will be collected at the enrollment visit and 1 year later. - Blood samples will be collected at each study visit.
Background: - National Cancer Institute Protocol 04-C-N191, also known as the Costa Rica Vaccine Trial, was a double-blind controlled study of the effectiveness of an experimental human papillomavirus (HPV) vaccine in preventing cervical cancer in young women in Costa Rica. Costa Rica was part of the first large study to show the association between HPV and cervical cancer, and the study contributed greatly to the understanding of this association. The women who have participated in the vaccine trial in Costa Rica are reaching the end of the follow-up period offered in the vaccine trial protocol, and as a result they are being offered the chance to have complementary vaccinations against HPV, hepatitis A, and hepatitis B. Objectives: - To offer participants in the Costa Rica Vaccine Trial the vaccine that they did not receive during the masked portion of the trial (HPV vaccine or hepatitis A vaccine) and hepatitis B vaccination. - To collect information about exposure to known and suspected risk factors for HPV infection and cervical cancer from women who are receiving vaccination against HPV at crossover. Eligibility: - Women who participated in National Cancer Institute Protocol 04-C-N191. Design: - All participants will be offered vaccination against hepatitis B. - Women who received the hepatitis A vaccine during the trial will be offered vaccination against HPV. - Women who received the HPV vaccine during the trial will be offered vaccination against hepatitis A. - Appropriate vaccinations (including a combined hepatitis A and hepatitis B vaccine) will be available to reduce the number of injections that participants will be asked to receive. - All vaccines will be given according to the manufacturer's specifications for appropriate length of time between vaccine doses.
The purpose of this study is to compare the effectiveness of three different antibiotic regimens against Helicobacter pylori (H. pylori).
The purpose of this study is to characterize the safety and efficacy of GSK Biologicals' H1N1 flu candidate vaccines GSK2340274A and GSK2340273A in children 6 months to less than 10 years of age.
This parallel, randomized, open-label, multi-centre study will evaluate the effect on overall survival of trastuzumab (Herceptin) in combination with a chemotherapy compared to the chemotherapy alone in patients with HER2-positive advanced gastric cancer. Trastuzumab (Herceptin) will be administered as intravenous infusion of 6 mg/kg (loading dose 8 mg/kg) every 3 weeks. The chemotherapy consists of a combination of 6 cycles of fluorouracil (800 mg/m2/day intravenous infusion every 3 weeks) and cisplatin (80 mg/m2 intravenous infusion every 3 weeks), or capecitabine (Xeloda, 1000 mg/m2 po twice daily for 14 days every 3 weeks) and cisplatin (80 mg/m2 intravenous infusion every 3 weeks). Treatment with trastuzumab (Herceptin) will continue until disease progression. The target sample size is 300-600 patients.
This study is designed to compare the effectiveness of the experimental drug, CP-690,550, to methotrexate in preventing joint damage and improving symptoms of rheumatoid arthritis. This study will also compare the safety of CP-690,550 with methotrexate.