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Revista Cubana de Medicina Tropical
versión On-line ISSN 1561-3054
Resumen
SAGARO DEL CAMPO, Nelsa María; ZAMORA MATAMOROS, Larisa; VALDES GARCIA, Luis Eugenio y RODRIGUEZ VALDES, Adriana. Direct Transmission of SARS-CoV-2 Among Contacts in Santiago de Cuba. Rev Cubana Med Trop [online]. 2022, vol.74, n.1 Epub 02-Mayo-2022. ISSN 1561-3054.
Introduction:
SARS-CoV-2 spreads, mainly, through close contact among people, hence the importance of detecting contacts of confirmed cases and identifying the mode of transmission between them.
Objective:
To identify the main modes of direct transmission among contacts of imported and autochthonous cases.
Methods:
A cross-sectional descriptive study was conducted in two populations: the confirmed cases of COVID-19 in Santiago de Cuba in the last quarter of 2020, and their declared direct contacts. In the search of the best representativeness, a two-stage stratified sampling method was used. The interview was used to collect the primary data; numbers and percentage, to summarize the information; the one-sample proportion hypothesis test and the compare proportions test using Minitab v.19, to identify possible differences across groups; and Microsoft Excel 2016, to produce the graphics.
Results:
The average number of contacts was higher among the autochthonous cases, prevailing the co-workers, neighbors and children. The contact-case relationship in imported cases was friend, driver, and mother or father-in-law; while in the autochthonous cases, it was son or daughter. Preventive actions were less used, and extra-domiciliary contacts of imported cases predominated. Contacts of imported cases were hospitalized more often, and had a higher proportion of asymptomatic than the autochthonous cases, but there was no significant differences.
Conclusions:
A differentiated pattern of transmission was not obtained; except that, transmission among autochthonous cases was between parent and child; while in imported cases, it was between friends.
Palabras clave : SARS-CoV-2; COVID-19; transmission; contact; autochthonous; imported.