A Study on the Immune Response and Safety of a Combined Measles, Mumps, Rubella, Chickenpox Vaccine Compared to a Marketed Combined Vaccine, Given to Healthy Children 4 to 6 Years of Age

Inclusion Criteria: * Healthy participants as established by medical history and clinical examination before entering into the study. * A male or female between, and including, 4 years and 6 years of age (i.e., from 4 year birthday until the day before the 7-year birthday) at the time of study intervention administration, and in accordance with local regulations. * Participant who previously received a first dose of varicella-containing vaccine in the second year of life. * Participant who previously received a single dose of measles-, mumps-, rubella-containing vaccine in the second year of life. * Written informed consent obtained from the participants' parent(s)/legally acceptable representative(s) (LAR\[s\]) prior to performance of any study-specific procedure (participant informed assent will be obtained from participants in line with local rules and regulations). * Participants' parent(s)/LAR(s), who, in the opinion of the investigator, can and will comply with the requirements of the protocol (e.g., completion of electronic diaries \[eDiaries\], return for follow-up visits). Exclusion Criteria: Medical Conditions * History of any reaction or hypersensitivity likely to be exacerbated by any component of the study interventions including hypersensitivity to neomycin or gelatin. * Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination (no laboratory testing required). * Hypersensitivity to latex. * …