ArticleBMC urology2021
Protective role of intravesical BCG in COVID-19 severity.
Article in BMC urology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it, 13 citations in OpenAlex.
- Pooled it
- Efficacy of BCG Vaccination Against Respiratory Tract Infections in Older Adults During the Coronavirus Disease 2019 Pandemic.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022Trial
- Development of Novel Intravesical Formulation for Bladder Retention Targeting Bladder Disorders.Current drug targets · 2025Review
- Article
- No Association Between BCG Instillations and COVID-19 Incidence in a Dutch Non-Muscle Invasive Bladder Cancer Cohort.Bladder cancer (Amsterdam, Netherlands) · 2023Article
- Beneficial non-specific effects of live vaccines against COVID-19 and other unrelated infections.The Lancet. Infectious diseases · 2023Review
- BCG Vaccination: A potential tool against COVID-19 and COVID-19-like Black Swan incidents.International immunopharmacology · 2022Review
- Identification of autoimmune markers in pulmonary tuberculosis.Frontiers in immunology · 2022Article
- The impact the COVID-19 pandemic on urology literature: a bibliometric analysis.Central European journal of urology · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo establish the role of BCG instillations in the incidence and mortality of COVID-19. PATIENTS AND
methodsNMIBC patients in instillations with BCG (induction or maintenance) during 2019/2020 were included, establishing a COVID-19 group (with a diagnosis according to the national registry) and a control group (NO-COVID). The cumulative incidence (cases/total patients) and the case fatality rate (deaths/cases) were established, and compared with the national statistics for the same age group. T-test was used for continuous variables and Fisher's exact test for categorical variables.
results175 patients were included. Eleven patients presented CIS (11/175, 6.3%), 84/175 (48.0%) Ta and 68/175 (38.9%) T1. Average number of instillations = 13.25 ± 7.4. One hundred sixty-seven patients (95.4%) had complete induction. Forty-three patients (cumulative incidence 24.6%) were diagnosed with COVID-19. There is no difference between COVID-19 and NO-COVID group in age, gender or proportion of maintenance completed. COVID-19 group fatality rate = 1/43 (2.3%). Accumulated Chilean incidence 70-79 years = 6.3%. Chilean fatality rate 70-79 years = 14%.
conclusionsAccording to our results, patients with NMIBC submitted to instillations with BCG have a lower case-fatality rate than the national registry of patients between 70 and 79 years (2.3% vs. 14%, respectively). Intravesical BCG could decrease the mortality due to COVID-19, so instillation schemes should not be suspended in a pandemic.
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Registered trials
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