The objective of this trial is to evaluate the effect of the consumption of a probiotic strain on the incidence and severity of COVID-19 in elderly population living in a nursing home. In addition, it will be evaluated if the probiotic strain have some effect on the immune response generated by the Covid-19 vaccine inthis population.
The working hypothesis is that the administration of a Lactobacillus strain improves the
immune response in the elderly population, improving the immune response to a possible
COVID-19 infection. The strain would act as an adjuvant that contributes to developing an
effective response against the virus, and therefore there are fewer infectious symptoms due
to this virus or, if it appears, it occurs in a milder way among the subjects who take the
probiotic strain. Also,the investigators hypothesizes that the administration of the
Lactobacillus may improve the immune response generated by the Covid-19 vaccine in this
elderly population.
Dietary Supplement: Placebo
Each participant will consume 1 capsule per day in one of the main meals without any restriction in the diet or in their life habits
Dietary Supplement: Lactobacillus
Each participant will consume 1 capsule per day in one of the main meals without any restriction in the diet or in their life habits
Inclusion Criteria:
1. Person over 60 years of age.
2. Intern in residence for the elderly.
3. Sign informed consent.
Exclusion Criteria:
1. Person who at some previous time has tested positive for detection of COVID-19 by PCR
or serology.
2. Person who at the time of starting the intervention presents symptoms compatible with
COVID-19.
3. Person with concomitant disease type HIV, transplant, active cancer or other type of
active immunosuppression.
Residencia San Marcos
Santiago De Compostela, A Coruña, Spain
Residencia Santa Olalla
Santiago De Compostela, A Coruña, Spain
Residencia San Simon de Ons
Santiago De Compostela, A Coruña, Spain