ABSTRACT
BACKGROUND: An outbreak is defined as an increase in epidemiologically-associated cases greater than expected, during the 2019 Coronavirus pandemic 10.1% of cases are reported in healthcare workers in Mexico, however the circulation of the new Omicron variant with greater transmissibility is a risk for the occurrence of outbreaks. OBJECTIVE: Describes an outbreak of SARS-CoV-2 infection in health personnel of a pediatric hospital during the pandemic. METHODS: An outbreak study is carried out in health personnel diagnosed with SARSCoV- 2 infection, in a tertiary pediatric hospital, from January 1, 2021 to January 30, 2022. The increase in laboratory confirmed cases in January, higher than cases reported in the previous period indicated an outbreak and the need to strengthen prevention measures in the population. RESULTS: An outbreak with 508 cases in health personnel in January 2022 was confirmed, identifying 27.5% as in-hospital. The circulation of a new variant with high transmissibility, together with the relaxation of prevention measures due to the state of vaccination and the perception of a lower risk from COVID 19, are factors for the presence of the outbreak. CONCLUSIONS: It is important to continuously strengthen prevention measures and make staff adopt them as a daily behavior to avoid outbreaks. © 2022 Instituto Nacional de Pediatria. All rights reserved.
ABSTRACT
Invasion biology examines species originated elsewhere and moved with the help of humans, and those species' impacts on biodiversity, ecosystem services, and human well-being. In a globalized world, the emergence and spread of many human infectious pathogens are quintessential biological invasion events. Some macroscopic invasive species themselves contribute to the emergence and transmission of human infectious agents. We review conceptual parallels and differences between human epidemics and biological invasions by animals and plants. Fundamental concepts in invasion biology regarding the interplay of propagule pressure, species traits, biotic interactions, eco-evolutionary experience, and ecosystem disturbances can help to explain transitions between stages of epidemic spread. As a result, many forecasting and management tools used to address epidemics could be applied to biological invasions and vice versa. Therefore, we advocate for increasing cross-fertilization between the two disciplines to improve prediction, prevention, treatment, and mitigation of invasive species and infectious disease outbreaks, including pandemics.