Ivermectin Effectivenss – Controlled Study

Here’s the only controlled study on the effectiveness of the use of ivermectin against Covid-19 which I hsve found.

A Friend of McHenry County Blog searched, but could find no controlled study indicating it is ineffective.

Ivermectin Prophylaxis Used for COVID-19: A Citywide, Prospective, Observational Study of 223,128 Subjects Using Propensity Score Matching

Lucy KerrFlavio A. CadegianiFernando BaldiRaysildo B. LoboWashington Luiz O. AssagraFernando Carlos ProençaPierre KoryJennifer A. HibberdJuan J. Chamie-Quintero

Published: January 15, 2022 (see history)

DOI: 10.7759/cureus.21272

Cite this article as: Kerr L, Cadegiani F A, Baldi F, et al. (January 15, 2022) Ivermectin Prophylaxis Used for COVID-19: A Citywide, Prospective, Observational Study of 223,128 Subjects Using Propensity Score Matching. Cureus 14(1): e21272. doi:10.7759/cureus.21272


Background: Ivermectin has demonstrated different mechanisms of action that potentially protect from both coronavirus disease 2019 (COVID-19) infection and COVID-19-related comorbidities. Based on the studies suggesting efficacy in prophylaxis combined with the known safety profile of ivermectin, a citywide prevention program using ivermectin for COVID-19 was implemented in Itajaí, a southern city in Brazil in the state of Santa Catarina. The objective of this study was to evaluate the impact of regular ivermectin use on subsequent COVID-19 infection and mortality rates.

Materials and methods: We analyzed data from a prospective, observational study of the citywide COVID-19 prevention with ivermectin program, which was conducted between July 2020 and December 2020 in Itajaí, Brazil. Study design, institutional review board approval, and analysis of registry data occurred after completion of the program. The program consisted of inviting the entire population of Itajaí to a medical visit to enroll in the program and to compile baseline, personal, demographic, and medical information. In the absence of contraindications, ivermectin was offered as an optional treatment to be taken for two consecutive days every 15 days at a dose of 0.2 mg/kg/day. In cases where a participating citizen of Itajaí became ill with COVID-19, they were recommended not to use ivermectin or any other medication in early outpatient treatment. Clinical outcomes of infection, hospitalization, and death were automatically reported and entered into the registry in real time. Study analysis consisted of comparing ivermectin users with non-users using cohorts of infected patients propensity score-matched by age, sex, and comorbidities. COVID-19 infection and mortality rates were analyzed with and without the use of propensity score matching (PSM).

Results: Of the 223,128 citizens of Itajaí considered for the study, a total of 159,561 subjects were included in the analysis: 113,845 (71.3%) regular ivermectin users and 45,716 (23.3%) non-users. Of these, 4,311 ivermectin users were infected, among which 4,197 were from the city of Itajaí (3.7% infection rate), and 3,034 non-users (from Itajaí) were infected (6.6% infection rate), with a 44% reduction in COVID-19 infection rate (risk ratio [RR], 0.56; 95% confidence interval (95% CI), 0.53-0.58; p < 0.0001). Using PSM, two cohorts of 3,034 subjects suffering from COVID-19 infection were compared. The regular use of ivermectin led to a 68% reduction in COVID-19 mortality (25 [0.8%] versus 79 [2.6%] among ivermectin non-users; RR, 0.32; 95% CI, 0.20-0.49; p < 0.0001). When adjusted for residual variables, reduction in mortality rate was 70% (RR, 0.30; 95% CI, 0.19-0.46; p < 0.0001). There was a 56% reduction in hospitalization rate (44 versus 99 hospitalizations among ivermectin users and non-users, respectively; RR, 0.44; 95% CI, 0.31-0.63; p < 0.0001). After adjustment for residual variables, reduction in hospitalization rate was 67% (RR, 0.33; 95% CI, 023-0.66; p < 0.0001).

Conclusion: In this large PSM study, regular use of ivermectin as a prophylactic agent was associated with significantly reduced COVID-19 infection, hospitalization, and mortality rates.

= = = = =

The family of my friend who died of Coronavirus asked Northwesten Medical Huntley Hospital doctors to treat him with ivermectin. They refused.


Ivermectin Effectivenss – Controlled Study — 5 Comments

  1. Isnt this exactly what Neil Young and his ilk is trying to keep us from hearing about or, heaven forbid, actually have access to for treatment?

  2. Again. If you are ill and the hospital or your doctor refuses to prescribe the HCQ or IVM protocol to treat you, use this site to go to doctors that are not big pharma bought and paid for. Mine at Northshore is. These are crimes against humanity.


    Cal if you or your friends family are searching the controlled media, there’s a reason why that’s all you found. Stop using Google. They are a big player in covering up the truth using algorithms. When this all hits the fan I certainly hope NW Huntley pays the family of your friend for being complicit in the cover up of therapeutics and basically committing murder under the guise of safety.

    Read the article Cal posted:


    In a citywide ivermectin program with prophylactic, optional ivermectin use for COVID-19, ivermectin was associated with significantly reduced COVID-19 infection, hospitalization, and death rates from COVID-19.

  3. There are scads of Japanese, Korean, Russian, Finnish, and Indian studies, from a year ago, detailing much of the same!

    This is hardly news outside of occupied America/Canada.

    Iceland’s Chief Epidemiologist has noted that there was a massive overwhelming of Iceland’s hospitals during their universal vaccine campaign (as common in most countries, a wave of Covid seems to accompany universal vaccination).

    Initially it appeared that their death rate had dropped (it is a small population with few Covid deaths anyway); however in August they had their highest mortality of 2021!


  4. For those that want to stay current on Covid, I recommend adding this to your already bookmarked sites and reading this daily.

    The truth tellers are going to win against the lying politicians, CDC, FDA, Fauci, Gates, WHO and the MSM and the rest.


    Watching the collapse of their big lie is priceless.

    What’s not priceless is that these slimeballs are killing people for their New World Order agenda.

    Whoever your friend was Cal, he is a casualty of a war to try to destroy our nation and constitution.

    The soldiers he was fighting against were dressed in doctor garb and acted like they cared when they did nothing to save his or her life using proven therapeutics.

    I consider his/her family a gold star family at this point.


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