A Clinical Trial to Assess the Efficacy and Safety of an Inactivated Vaccine (Vero Cell) Against EV71 in Chinese Children Aged 6-35 Months

J

Jiangsu Provincial Center for Disease Control and Prevention

Status and phase

Completed
Phase 3

Conditions

Herpangina
Other EV71-associated Diseases
Hand, Foot and Mouth Disease

Treatments

Biological: inactivated vaccine (Vero Cell) against EV71
Biological: 0/0.5ml placebo

Study type

Interventional

Funder types

NETWORK
Industry

Identifiers

NCT01508247
JSVCT010

Details and patient eligibility

About

Since its discovery in 1969, enterovirus 71 (EV71) has been recognised as a frequent cause of epidemics of hand-foot-mouth disease (HFMD) associated with severe neurological sequelae in a small proportion of cases. There has been a significant increase in EV71 epidemic activity throughout the Asia-Pacific region since 1997. Recent HFMD epidemics in this region have heen associated with a severe from of brainstem encephalitis associated with pulmonary oedema and high case-fatality rates. The data from the phase 1 and 2 trials suggested that the inactivated EV71 vaccine had a clinically acceptable safety and good immunogenicity for healthy Chinese children and infants. According to the immunogenicity and safety results, the 320U with adjuvant with immunizing schedule of two doses (per 28 day) will be applied in phase 3 clinical trial.

Enrollment

10,245 patients

Sex

All

Ages

6 to 35 months old

Volunteers

No Healthy Volunteers

Inclusion criteria

Only subjects fulfilling all of the following criteria will be eligible for the study:

  • Healthy children aged from 6 to 35 months old
  • General good health as established by medical history and physical examination
  • The subjects' guardians are able to understand and sign the informed consent
  • Had never received the vaccine against EV71
  • The subjects' guardians allow to comply with the requirements of the protocol
  • Available for all visits scheduled in this study
  • Subjects with temperature <=37.0°C on axillary setting

Exclusion criteria

Subjects will not be eligible for the study if any of the following criteria is met:

  • Subject who has a medical history of HFMD
  • Subject that has a medical history of any of the following: allergic history, or allergic to any ingredient of vaccine
  • Family history of seizures or progressive neurological disease
  • Family history of congenital or hereditary immunodeficiency
  • Severe malnutrition or hypogenesis
  • Major congenital defects or serious chronic illness, including perinatal brain damage
  • Autoimmune disease
  • Bleeding disorder diagnosed by a doctor or significant bruising or bleeding difficulties with IM injections or blood draws
  • Asplenia, functional asplenia, or splenic excision
  • History of asthma, angioneurotic edema, diabetes or malignant tumour
  • History of thyroidectomy, or thyroid disease in last 12 months
  • Any acute infections in last 7 days
  • Any prior administration of immunodepressant or corticosteroids in last 6 months
  • Any prior administration of blood products in last 3 months
  • Any prior administration of other research vaccines or medicines in last 1 month
  • Any prior administration of attenuated live vaccine in last 15 days
  • Any prior administration of subunit or inactivated vaccines in last 7 days
  • Under the anti-TB prevention or therapy
  • Subjects with temperature >37.0°C on axillary setting
  • Any condition that in the opinion of the investigator, may interfere with the evaluation of study objectives

Exclusion Criteria for the second dose:

Subjects will not be eligible for the second dose if any of following adverse events happened after the first dose. They can continue other process of the study without the second dose vaccination according to the opinion of the investigator.

  • Had any serious adverse events related to the first dose of inactivated vaccine (vero cell) against EV71 within 7 days
  • Hypersensitivity reactions after vaccination (including urticaria/rashes that occur within 30 minutes after inoculation)
  • Anaphylaxis after vaccination
  • Any confirmed or suspected autoimmune disease or immune deficiency diseases, including human immunodeficiency virus (HIV) infection
  • Any condition that in the opinion of the investigator, or IRB

Trial design

10,245 participants in 2 patient groups, including a placebo group

vaccine against EV71
Experimental group
Description:
Inactivated vaccine (Vero Cell) against EV71 of 320U /0.5ml in 5000 children aged 6-35 months on day0, 28
Treatment:
Biological: inactivated vaccine (Vero Cell) against EV71
placebo
Placebo Comparator group
Description:
0/0.5ml placebo in 5000 children aged 6-35 months on day0, 28
Treatment:
Biological: 0/0.5ml placebo

Trial contacts and locations

0

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Data sourced from clinicaltrials.gov

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