Related Experiment Video
Updated: Sep 19, 2025

Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses
Published on: November 10, 2023
Measles Outbreak Investigation in Chandigarh in 2023: A Case Series
Vidushi Mahajan1, Mini P Singh2, Anjali Sharma3
1Department of Pediatrics, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India. vidushimahajan2003@yahoo.co.in.
Objective:
To investigate the measles virus (MeV) outbreak at a tertiary-care centre of northern India in 2023.
Methods:
Probable and confirmed cases of measles presenting to from a tertiary hospital in Chandigarh, India, between January 01, 2023, and September 30, 2023, were defined using the WHO measles outbreak toolbox. Laboratory confirmation was based on positive IgM serology for measles. Laboratory-confirmed cases were subjected to genotyping by real-time polymerase chain reaction as per the Centre for Disease Control protocol.
Results:
Out of 38 laboratory-confirmed cases, 18 (47%) were infants; 10 out of 18 infants were aged < 9 months. 60% cases were unvaccinated for MeV. Genotyping in 3 out of 5 cases revealed the D8 genotype, MeV strain MVs/Thiruvananthapuram. IND/18.12 in circulation.
Conclusion:
The 2023 outbreak underscores the critical impact of the immunization gap, need for sustained vaccination efforts and to consider early 2-dose schedule to prevent similar occurrences in the future.
Related Concept Videos
Steps in Outbreak Investigation
Vaccinations
Principles of Disease Surveillance
Infection
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
Bacterial Phylum Chlamydiae

