Operational surveillance in shops to curb spread of COVID-19


The Secretariat of Health estimates that there are more than 26 thousand cases of Covid-19 on the basis of a model for the evaluation of the pandemic called sentinel, developed by the World Health Organization (WHO).

“We estimate that about 26 thousand 519 cases,” said assistant secretary of Prevention and Health Promotion, Hugo López-Gatell, at the press conference Wednesday, explaining the model the sentinel, who was adopted Mexico for the evaluation of the epidemic and developed by the WHO and the Pan american Health Organization.

He explained that this model “allows you to have knowledge of how the behaviour of the epidemic and how decisions are control and prevention and, at the same time, take the reality as it is”.

López-Gatell stressed that this system is a proven method of “monitoring efficient” that lets you know “how it behaves the epidemic and how they have to make the decisions.”

What is it and how to operate the model? The strategy of sentinel surveillance was adopted by Mexico as of 2006.

This strategy involves the collection, integration, verification, and analysis of detailed epidemiological information on a reduced set of drives monitors.

This model is more efficient than general surveillance, because it gets more in-depth information and detailed with a smaller investment.

The greatest wealth of this information is to do more comprehensive analysis and, therefore, better target interventions for prevention and control.

It is usually conducted with the surveillance-based indicators and includes collecting data from a limited number of surveillance sites in a systematic manner and routine.

Ideally, the sites chosen to be representative of the population to which the gathered information can be applied to the population as a whole.

The model is still in general terms recommended by the generic protocol of the WHO, and is analogous to that used by the Centers for Disease Control and Prevention (CDC) in the united States and by the Public Health Agency of Canada (PHAC).

According to the WHO, the sentinel surveillance is geared to monitor trends in the occurrence of the event to the identification of risk thresholds and generating alerts for epidemiological.

In addition, to monitor the biological characteristics of the infectious agents and to estimate, according to the constraints characteristic of this strategy, the burden of disease and demand for care in the health services. Also, it applies to the monitoring of the patterns of geographical distribution and social of the disease.

Is oriented in the same way to the monitoring of the use of health services, the surveillance of the mortality associated with the event and use of more effective and efficient human resources and existing materials.

Finally, to guide and monitor the impact of interventions for prevention and control, and strengthen the epidemiological investigation, clinical, and laboratory and multi-disciplinary work.

Unlike surveillance systems, wide coverage systems sentinel enhance the quality and efficiency of the information.