Evolution of Quarantine Measures and International Security
Attempts to protect territories from the introduction of lethal diseases through isolation (quarantines) date back to the 14th century. However, modern epidemiology has proven that physical isolation alone is insufficient. The key mechanism for preventing large-scale epidemics has become a rapid alert system and close international cooperation.
Today, national and global epidemiological security relies on centralized information exchange among all states. The main goal is to give countries time to take preventive measures in a timely manner and reliably protect against the importation of infectious agents from outside.
Quarantine (Convectional) Diseases and the Role of the WHO
Quarantine infections refer to a strictly defined group of diseases whose prevention and epidemiological data exchange are regulated by special international agreements (conventions).
A historical milestone in this direction was the introduction of the International Sanitary Regulations on October 1, 1952. Initially, the list of convention diseases included plague, cholera, yellow fever, and smallpox. The current list requiring strict international control includes:
- Plague;
- Cholera;
- Yellow fever.
The control mechanism clearly assigns responsibilities. National health authorities are required to immediately notify the World Health Organization (WHO) of any detected case of a quarantine disease and regularly provide detailed reports on the current epidemiological situation. In turn, the WHO assumes the function of promptly informing all member states to coordinate a global response.
Highly Dangerous Infections (HDIs) and Laboratory Work
The concept of highly dangerous infections (HDIs) is much broader than the list of quarantine diseases. This group is characterized by sudden outbreaks, the ability to affect massive populations, extremely severe clinical courses, and high fatality rates.
- Epidemic typhus and relapsing fevers;
- Severe influenza forms and poliomyelitis;
- Anthrax, tularemia, and brucellosis;
- Botulism and various arboviral infections.
Due to the enormous threat posed by these pathogens, work with them is subject to strict rules. Diagnostics must be performed as quickly as possible, making rapid diagnostic methods such as the immunofluorescence assay (IFA) critical. Moreover, any manipulation of these pathogens is strictly prohibited in routine medical facilities — work is permitted exclusively within specialized containment laboratories with the highest level of biosafety.