View clinical trials related to Poliomyelitis.
Filter by:Trail To Evaluate the Immunity Duration of healthy children who already took part in " The safety and immunogenicity by different sequential schedules of bOPV and bOPV in dragee candy with sIPV, a randomized, double blind, single center and parallel phase Ⅲ clinic trial was performed in Infants of two-month old in Guangxi Province, China" and continue to search for the effects of booster immunization.
This study will be used to develop a tool to streamline poliovirus environmental surveillance for the polio endgame and to provide a tool for detecting polio in places where there is no capacity to carry out the gold standard culture-based detection.
In 2015, Strategic Advisory Group of Experts in Immunization (SAGE) recommended the global switch from trivalent to bivalent oral poliovirus vaccine (OPV) that does not contain type 2 poliovirus and introduction of a single dose of inactivated poliovirus vaccine (IPV) to maintain population immunity to type 2 polio to reduce the risk of vaccine derived polio. Following SAGE recommendations, Nepal introduced one dose of IPV in routine immunization in 2015 followed by withdrawal trivalent OPV in April 2016. However, Nepal, like many other countries had to stop vaccination by the end of 2016 because of a global shortage of IPV. Single dose of IPV induces detectable antibodies in 34% to 80% of infants, compared to >90% after three doses and most of seronegative children (84-98%) are "immunologically primed" by the first dose. Primed individuals produce protective antibody levels in serum within one week of exposure to a new dose of IPV or OPV. However, it is unknown whether seroconversion or priming responses persist, and for how long they persist after the single dose of IPV. IPV immunogenicity for vaccine delivered low-resource countries may also be inferior to that observed in clinical trials because of program factors that decrease vaccine efficacy. This cross sectional study aims to determine whether the immune response provided by a single dose of IPV delivered through routine immunization services persists for more than a year. The study will be implemented in three study sites in Kathmandu, Nepal during November 2018- July 2019. Information generated from this study is expected to allow better estimation of children partially protected (primed) or fully protected against type 2 poliovirus depending on coverage and time since last IPV vaccination. These estimates will help inform the Global Polio Eradication Initiative (GPEI) on vaccine choices for responding to type 2 vaccine derived poliovirus (VDPV) outbreaks and will help guide decisions on polio immunization schedules for Nepal and for other countries in future.
This is an open-label phase IV randomized clinical trial that will assess intestinal and humoral immunity among infants who receive a combination of monovalent oral poliovirus vaccine type 1 and fractional dose of inactivated poliovirus vaccine, monovalent oral poliovirus vaccine type 1 only, and bivalent oral poliovirus vaccine only.
This is a phase III assessing the safety and immunogenicity of adjuvanted the reduced dose inactivated polio vaccine, IPV-Al SSI given as a booster vaccination to infants who were previously immunised with primary vaccination of IPV-Al SSI or IPV SSI in the VIPV-07 trial at age 2, 4, and 6 months. The IPV-Al SSI vaccine will be given at the age of 15-18 months.
With the progress of the eradication of polio, bivalent oral attenuated live poliomyelitis vaccine against type 1 and 3 (bOPV) and inactivated poliomyelitis vaccine made by Sabin strain (sIPV) are required to use in the "Strategy of Polio Eradication & Endgame Strategic Plan 2013-2018" worldwide. To evaluate the safety and immunogenicity by different sequential schedules of bOPV/tOPV with IPV(sIPV/cIPV), a randomized, double blind, single center and parallel phase Ⅲ clinic trial was performed in Infants of two-month-old in Guangxi Province, China.
In April 2017, WHO recommended that a two-dose, Inactivated Poliovirus Vaccine, IPV-only schedule at 4 months and 8 months of age can be used after polio eradication, with a schedule seroconversion target of at least 90%. However, there is no such data for China domestic Sabin strain IPVs to support a 2-dose schedule among Chinese infants. This research is to determine the seroconversion rates among two arms: Group 1: two-dose schedule, infants will be received two doses of Sabin IPV, the first dose at 4 month of age, and the second dose at 8-11 month of age. Group 2: three-dose schedule, infants will be received three doses of Sabin IPV at 2, 3 and 4 month of age respectively. This schedule is currently recommended by manufacture's package insert for routine use. The hypothesis is the seroconversion will be above 90% in both groups.
This is a longitudinal, observational study with the aims of comparing spinal cord gray matter areas in patients with Post-Polio Syndrome to age and sex matched healthy control subjects and to correlate atrophy with metrics of clinical disability.
This will be a single center, age de-escalation, partly-blinded, randomized study. The trial will be performed with the participation of 100 healthy children age 1-5 years who have been vaccinated with inactivated polio vaccine (IPV) and/or oral polio vaccine (OPV) in their first year of life and of 648 healthy 6 week-old infants, who will be pre-vaccinated with bOPV-IPV before being randomized to study groups. The allocation of 18-22 week-old infants to groups will be performed in a randomized manner. Following completion and Data Safety Monitoring Board (DSMB) review of follow-up for general safety data (Serioius Adverse Events -SAEs-, Important Medical Events -IMEs- and severe adverse events -AEs), a DSMB recommendation to proceed will result in randomization of the final cohort of infants. Allocation of 1 to 5 year-old children to groups will be performed in a randomized manner. The DSMB will establish and continuously assess stopping rules for safety.
This study aims to obtain the direct domestic IPV vaccine monitoring data for the CNBG products, and provide scientific evidence for the National Immunization Program and long-term polio vaccine immunization policy. The overall objective of this research is to determine the seroconversion rates of two reduced Sabin IPV schedules in Chinese children - a 2-dose schedule and a 3-dose schedule.