COVID-19: Povidone-Iodine Intranasal Prophylaxis in Front-line Healthcare Personnel and Inpatients

NCT ID: NCT04364802

Last Updated: 2022-12-02

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE2
• Total Enrollment: 98 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2020-04-29
• Study Completion Date: 2022-01-28

Brief Summary

Povidone-iodine (PVP-I) is a broad-spectrum antiseptic with activity against bacteria, fungi, and viruses. It has been previously used in both intranasal preparations against Methicillin Resistant Staphylococcus Aureus (MRSA) as well as oral preparations in in-vitro studies of Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV), Middle Eastern Respiratory Syndrome Coronavirus (MERS-CoV), influenza H1N1, and rotavirus with good efficacy. This study will evaluate the efficacy of PVP-I as prophylaxis in Coronavirus Disease 2019 (COVID19)-negative front-line health care workers, hospital patients, and community members.

Detailed Description

The COVID-19 pandemic, caused by Severe Acute Respiratory Syndrome Coronavirus - 2 (SARS-CoV-2), has been implicated in over 12 million cases and counting in the United States alone and has killed at least 1300 health care workers and >250,000 citizens. This, added to the national shortage of personal protective equipment (PPE) and the need to reuse PPE, lends to the significantly increased risk to healthcare providers. At the beginning of this trial, there were only 360,000 cases.

The highest concentration of viral particles resides within the nasopharynx. The virus is thought to spread via respiratory droplets with the potential for transmission via inhalation of droplets, contact to the nose and mouth with infected materials, and airborne transmission. Given that frontline workers are involved in high-risk procedures including intubation, bronchoscopy, proning patients (which can lead to droplet production) and in some cases are reusing PPE, finding ways to reduce viral load or viral exposure are paramount.

Povidone-iodine (PVP-I) is a broad-spectrum antiseptic with activity against bacteria, fungi, and viruses. It has been previously used in both intranasal preparations against MRSA as well as oral preparations in in-vitro studies of SARS-CoV-2, MERS-CoV, H1N1, and rotavirus with good efficacy.

Due to the known breadth of its antiviral activity and similarities in molecular structure, it can be extrapolated that PVP-I should have robust activity against SARS-CoV-2. Eggers et al found that at a concentration of 1% there was a reduction of viral activity of 99.99% in in-vitro assays. At 2 minutes, a concentration of 0.23% was enough to reduce viral loads appreciably. New data has demonstrated efficacy in-vitro of PVP-I against SARS-CoV-2 at low concentrations.

PVP-I is widely used as an antiseptic and is well-tolerated and has been shown to have little to no effect on mucociliary clearance, olfaction, or thyroid function if iodine holidays are taken, although care must be utilized in monitoring.

In this study, front line healthcare workers will be asked to complete a pre-participation survey and screened for COVID positivity. They will then be given premade PVP-I gargles and nasal sprays, as well as a calendar card to mark compliance. PVP-I nasal spray and gargle (10% diluted 1:30) will be used prior to the start of a shift, during "lunch break", and at the end of shift. First, the nasal spray will be sprayed in the nose (2 sprays each naris). For adequate coverage, the participant should be able to taste the iodine or see it in the back of the throat. This should be left in place for 30 seconds. Then, the participant will gargle the solution for 30 seconds and not have anything to eat or drink by mouth for 30 minutes. Treatment will continue for 3 weeks, or until the healthcare worker presents with COVID symptoms. Participants will then be tested for COVID positivity and asked to fill out a second questionnaire assessing study tolerability. At completion of the study, they will be asked to turn in their calendar card to assess how many applications they were able to complete.

Given the high rate of asymptomatic carriers, a second arm will also be planned for patients who have a 7+ day hospitalization or who are set to undergo a significant surgical procedure. These patients will be offered participation in the study as well and will be given the same questionnaire and undergo preoperative testing if they consent. For patients in the study group, PVIP gargle and nasal sprays will be applied preoperatively or shortly after admission and enrollment in the study for the non-operative group. The patients will then be retested in 2 weeks or as directed by the presentation of symptoms concerning for infection with SARS-CoV-2.

Community spread has been found to be the most likely implicated in infection and thus the trial is now being expanded to include community members. Thus, a THIRD arm has now been added to include community members. Prescreening questionnaires will be given. As long as the participant has had no prior history of a positive COVID-19 test, they will be considered eligible for participation. After a screening consultation, they will undergo a COVID-19 test (should be completed within 72 hours of screening). If negative, they will be eligible. Participants who are pregnant, breastfeeding, have thyroid disease or cancer, or who have an allergy to iodine/shellfish/or contrast dye can still participate but will automatically be on the control arm. Participants may opt to be on either the PVP-I arm or the control arm. They will be asked to fill out a daily questionnaire regarding their exposures and whether they were wearing a mask or if other people were wearing a mask at that time.

Conditions

COVID-19; SARS-CoV 2

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: NONE

Study Groups

Healthcare Workers - Control

Front-line healthcare workers (FLCHW) who are negative for COVID will receive standard PPE and a pre- and post-study test for COVID-19.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Healthcare Workers - PVP-I

Front-line healthcare workers (FLCHW) who are negative for COVID-19 will receive standard PPE and a pre- and post-study test for COVID-19. Additionally, they will receive PVP-I spray and gargle.

Group Type: EXPERIMENTAL

Povidone-Iodine Nasal Spray and Gargle

Intervention Type: DRUG

Healthcare workers will receive standard PPE and a pre- and post-study nasal swab COVID19 test. Additionally, they will receive povidone-iodine nasal spray and gargle (10% diluted 1:30) to use at the beginning of their shift, in the middle, and at the end of their shift.

Inpatients - Control

Inpatients who have a 7+ day hospitalization or who are set to undergo a significant surgical procedure will receive standard care and a pre- and post-study COVID-19 test.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Inpatients - PVP-I

Inpatients who have a 7+ day hospitalization or who are set to undergo a significant surgical procedure will receive standard care and a pre- and post-study COVID-19 test. Additionally, they will receive PVP-I gargle and nasal sprays that will be applied shortly after admission or perioperatively.

Group Type: EXPERIMENTAL

Povidone-Iodine Nasal Spray and Gargle

Intervention Type: DRUG

Patients will receive standard of care treatment and a pre- and post-study nasal spray COVID19 test. Additionally, they will receive povidone-iodine nasal spray and gargle shortly after admission or preoperatively.

Community - Control

Community participants who are negative for COVID-19 will receive a pre- and post-study COVID-19 test.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Community - PVP-I

Community participants who are negative for COVID-19 will receive a pre- and post-study COVID-19 test. Additionally, they will receive PVP-I gargle and nasal sprays.

Group Type: EXPERIMENTAL

Povidone-Iodine Nasal Spray and Gargle

Intervention Type: DRUG

Community members will receive a pre- and post-study nasal swab COVID19 test. Additionally, they will receive povidone-iodine nasal spray and gargle (10% diluted 1:30) to use at home.

Interventions

Povidone-Iodine Nasal Spray and Gargle

Healthcare workers will receive standard PPE and a pre- and post-study nasal swab COVID19 test. Additionally, they will receive povidone-iodine nasal spray and gargle (10% diluted 1:30) to use at the beginning of their shift, in the middle, and at the end of their shift.

Intervention Type: DRUG

Povidone-Iodine Nasal Spray and Gargle

Patients will receive standard of care treatment and a pre- and post-study nasal spray COVID19 test. Additionally, they will receive povidone-iodine nasal spray and gargle shortly after admission or preoperatively.

Intervention Type: DRUG

Povidone-Iodine Nasal Spray and Gargle

Community members will receive a pre- and post-study nasal swab COVID19 test. Additionally, they will receive povidone-iodine nasal spray and gargle (10% diluted 1:30) to use at home.

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• healthcare worker OR
• patient with expected hospital stay of 7+ days OR
• patient admitted for major surgery OR
• community member
• COVID19 negative by nasal swab test
• asymptomatic for COVID19
• able to consent

Exclusion Criteria

• positive for COVID19 by nasal swab
• symptomatic for COVID19
• unable to consent

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 99 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Nikita Gupta

OTHER

Sponsor Role: lead

Responsible Party

Nikita Gupta

Assistant Professor

Responsibility Role: SPONSOR_INVESTIGATOR

Principal Investigators

Alexandra E Kejner, MD

Role: PRINCIPAL_INVESTIGATOR

Univesity of Kentucky

Locations

University of Kentucky

Lexington, Kentucky, United States

Countries

United States

References

Burton MJ, Clarkson JE, Goulao B, Glenny AM, McBain AJ, Schilder AG, Webster KE, Worthington HV. Use of antimicrobial mouthwashes (gargling) and nasal sprays by healthcare workers to protect them when treating patients with suspected or confirmed COVID-19 infection. Cochrane Database Syst Rev. 2020 Sep 16;9(9):CD013626. doi: 10.1002/14651858.CD013626.pub2.

Reference Type: DERIVED

PMID: 32936949 (View on PubMed)

Provided Documents

Document Type: Study Protocol and Informed Consent Form

View Document

Other Identifiers

58748

Identifier Type: -

Identifier Source: org_study_id