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Effect of the Consumption of a Lactobacillus Strain on the Incidence of Covid-19 in the Elderly

Multicenter, Randomized, Double-blind Parallel Group Pilot Study to Evaluate the Effect of the Consumption of a Lactobacillus Strain on the Incidence of Covid-19 in the Elderly

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04756466
Enrollment
201
Registered
2021-02-16
Start date
2021-01-01
Completion date
2021-12-31
Last updated
2024-10-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

SARS CoV-2 Infection, Elderly

Keywords

Probiotics, COVID19

Brief summary

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.

Detailed description

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.

Interventions

DIETARY_SUPPLEMENTPlacebo

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_SUPPLEMENTLactobacillus

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

Sponsors

Biosearch S.A.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
60 Years to No maximum
Healthy volunteers
Yes

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.

Design outcomes

Primary

MeasureTime frameDescription
Incidence of SARS CoV-2 infection.3 monthsIncidence of SARS CoV-2 infection confirmed by PCR or antigen test

Secondary

MeasureTime frameDescription
Incidence of ICU admissions caused by SARS-CoV-2 infection3 monthsIncidence of ICU admissions caused by infection caused by SARS-CoV-2 confirmed by PCR or antigen test
Incidence of pneumonia caused by SARS-CoV-2 infection .3 monthsIncidence of pneumonia caused by infection caused by SARS-CoV-2 confirmed by PCR or antigen test
Incidence of need for oxygen support due to SARS-CoV-2 infection..3 monthsIncidence of need for oxygen support due to SARS-CoV-2 infection confirmed by PCR or antigen test.
Incidence of gastrointestinal symptoms due to SARS-CoV-2 infection.3 monthsIncidence of gastrointestinal symptoms due to SARS-CoV-2 infection confirmed by PCR or antigen test.
Days with body temperature> 37.5ºC.3 monthsIn case of SARS-CoV-2 infection confirmed by PCR or antigen test, Days with body temperature\> 37.5ºC
Incidence of hospital admissions caused by SARS-CoV-2 infection .3 monthsIncidence of hospital admissions caused by infection caused by SARS-CoV-2 confirmed by PCR or antigen test
Days of persistent feeling of fatigue.3 monthsIn case of SARS-CoV-2 infection confirmed by PCR or antigen test, Days of persistent feeling of fatigue.
Use of pharmacological treatments.3 monthsIn case of SARS-CoV-2 infection confirmed by PCR or antigen test, use of pharmacological treatments
Serum levels of IgG antibody against SARS-CoV-26-weeks from second dose of the vaccineIn case volunteers was vaccinated against SARS-CoV-2, the serum levels of IgG antibody against SARS-CoV-2 will be measured, at 6 weeks from the second dose of the vaccine
Serum levels of IgA antibody against SARS-CoV-26-weeks from second dose of the vaccineIn case volunteers was vaccinated against SARS-CoV-2, the serum levels of IgA antibody against SARS-CoV-2 will be measured, at 6 weeks from the second dose of the vaccine
Days of persistent cough.3 monthsIn case of SARS-CoV-2 infection confirmed by PCR or antigen test, Days with persistent cough

Countries

Spain

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026