Safety and Reactogenicity Trial of Vaccine for the Prevention of Infections Caused by Haemophilus Influenzae Type b

Inclusion Criteria: * Healthy volunteers (men and women) aged 18-50 years; * Written informed consent of volunteers to participate in the clinical trial; * Volunteers not previously vaccinated with any vaccine to prevent infections caused by Haemophilus influenza type b; * Volunteers able to fulfill requirements of the Protocol (i.e. fill out the patient's diary, come to follow-up visits); * For fertile women, a negative pregnancy test and consent to observe adequate methods of contraception (if hormonal contraceptives are used, they must be canceled at least 2 months before the start of the trial). All women with childbearing potential must have a negative pregnancy test result during the Data Collection Period. In the course of the trial women should use contraception methods with a reliability exceeding 90 %, or be sterile, or be in a postmenopausal state. Contraception methods with a reliability exceeding 90 % of common use include cervical caps with spermicide, diaphragms with spermicide, condoms, intra-uterine spirals. * For the men, are able to conceive - consent to use adequate contraception methods. In the course of the trial, men and their sexual partners should use contraception methods with a reliability exceeding 90 %, or be sterile. Contraception methods with a reliability exceeding 90 % of common use include cervical caps with spermicide, diaphragms with spermicide, condoms, intra-uterine spirals. Exclusion Criteria: * A serious post-vaccination reaction (te…