Related Experiment Videos
Four generations of probable person-to-person transmission of human monkeypox
Abstract:
This paper examines an outbreak of five cases of human monkeypox which occurred in children belonging to two families living in the West Kasai region of Zaire during May-July 1983. Epidemiologic investigations suggest that the first case was infected from an animal source, possibly a monkey, and that each of the other four cases was infected from a previous human case. Three of these cases of presumed person-to-person transmission occurred in close household contacts. The other case infection occurred either by casual contact within the hospital compound, or possibly because of infection due to use of the same syringe for injections. Human monkeypox is the most important orthopoxvirus infection in the post-smallpox eradication period. The disease is a zoonosis and person-to-person transmission is rather difficult. Thus, this episode is a rare event and special analysis of the circumstances is discussed. However, it supports the necessity to carry out surveillance and research on this disease as recently reported by Arita et al.
Insights
This study investigated a rare human monkeypox outbreak in Zaire, revealing person-to-person transmission among children. The findings highlight the need for continued surveillance of this orthopoxvirus.
Area of Science:
- * Virology and Epidemiology
- * Infectious Diseases
- * Public Health
Background:
- * Human monkeypox is an important orthopoxvirus infection following smallpox eradication.
- * The disease is typically a zoonosis with difficult person-to-person transmission.
- * An outbreak in Zaire provided a unique opportunity to study transmission dynamics.
Purpose of the Study:
- * To examine an outbreak of five human monkeypox cases in children.
- * To investigate the transmission routes, including animal-to-human and human-to-human.
- * To analyze the circumstances of this rare event and its implications for surveillance.
Main Methods:
- * Epidemiologic investigation of cases within two families in Zaire.
- * Tracing the source of infection from potential animal or human contacts.
- * Analysis of transmission patterns in household and hospital settings.
Main Results:
- * The first case was likely infected from an animal source (possibly a monkey).
- * Four subsequent cases resulted from presumed human-to-human transmission.
- * Three infections occurred through close household contact; one possibly through casual hospital contact or shared syringes.
Conclusions:
- * This outbreak represents a rare instance of significant human-to-human transmission of monkeypox.
- * The findings underscore the importance of disease surveillance and research for orthopoxviruses.
- * Understanding transmission is crucial for public health preparedness and control efforts.