The True Story: 132 Cases and Over 3,000 Doses

On 14 June 2022, Quebec authorities reported 132 mpox cases, 126 of them in Montreal.

Since late May the city had given more than 3,000 doses of Imvamune to at-risk groups, showing that quickly opened vaccine clinics must handle large numbers in a short time.

The Key Lesson: Hundreds of At-Risk People Wait in One Space

Temporary clinics in meeting rooms, halls or tents must be set up fast. Points to watch are:

• Waiting chairs used one after another all day
• Registration desks and pens that everyone touches
• Vaccination chairs or beds used in succession
• Post-vaccination observation areas where people sit 15–30 minutes
• Temporary restrooms in heavy use

How Mpox Spreads

According to the World Health Organization, mpox spreads mainly through close contact with an infected person's skin or sores, and can also spread through contaminated objects such as clothing, bedding and towels. Mpox is an enveloped virus, which suitable disinfectants can inactivate.

Risk Register for Temporary Vaccination Clinics

1. People with rash or fever wait among others: likelihood medium / impact high / level high. Mitigation: screen at the entrance and use a separate waiting area. Owner: head nurse
2. Vaccination chairs not wiped between clients: likelihood high / impact medium / level high. Mitigation: wipe chairs and tables after every client. Owner: station nurse
3. Shared registration pens: likelihood high / impact low / level medium. Mitigation: use online registration or wipe pens on a schedule. Owner: registration staff
4. Infectious waste not separated: likelihood medium / impact high / level high. Mitigation: infectious waste bins and sharps boxes at every station. Owner: unit lead
5. Venue not disinfected after the clinic: likelihood medium / impact medium / level medium. Mitigation: fog before returning the venue. Owner: venue coordinator

Ways to Reduce Risk at Temporary Vaccine Clinics

1. Screen symptoms at the entrance
2. Separate waiting for symptomatic people
3. Wipe chairs and tables after every client
4. Use online registration to cut pen sharing
5. Separate infectious waste and sharps
6. Space chairs in observation areas
7. Fog the venue before returning it

How ULV Fogging Helps

The World Health Disinfection disinfection service uses ULV fogging machines that turn the disinfectant into a fine mist. It settles across the whole area, including corners, curtains, upholstery and surfaces that hand wiping cannot fully reach.

• Whole-area coverage without relying on wiping spot by spot
• Quick return to use, typically about 30 minutes after fogging
• The team wears full protective equipment, so owners and staff do not take the risk themselves
• Report and photos after the job to show customers, management or authorities
• Tax invoice with 3% withholding tax for companies and agencies
• More than 5 years of experience in hospitals, offices, hotels and public buildings

The Disinfectant We Use: Chemgene HLD4H

The team uses Chemgene HLD4H. According to WHD's product page, it meets the EN 14476 standard for virucidal activity, is used in NHS hospitals in England, and is endorsed by Mahidol University. We do not claim that Chemgene has been tested against mpox specifically. But mpox is an enveloped virus, which suitable disinfectants can inactivate when used at the manufacturer's stated concentration and contact time.

• No harsh bleach smell
• Works on many surfaces, from desks and counters to handles and equipment
• Can be bought for daily wiping of high-touch points

Before and After

Frequently Asked Questions

Q: How many doses had Montreal given? A: Over 3,000 doses of Imvamune between late May and mid-June 2022. Q: What should be done before returning a borrowed venue? A: Clean, wipe touch points and fog; it can usually be used again about 30 minutes after fogging. Q: Does Chemgene HLD4H kill mpox? A: It is not claimed to be tested against mpox specifically, but it meets EN 14476 for viruses, and mpox is an enveloped virus. Q: Can agencies or hospitals get a tax invoice? A: Yes. Tax invoices are issued and 3% withholding tax is supported. Call 065-556-6294 or LINE @whd268.

Related Links and Sources

• World Health Disinfection disinfection service
• Chemgene HLD4H disinfectant and price
• Mpox information from Thailand's Department of Disease Control, hotline 1422
• WHO mpox fact sheet

Prevent It with a Disinfection Service and Chemgene HLD4H

The true story from Montreal is a reminder that vaccine clinics must open fast and serve many. Temporary clinics that plan hygiene from day one protect clients and staff alike. Prevent it with the World Health Disinfection disinfection service for temporary clinics, meeting rooms and halls used as vaccination points, and Chemgene HLD4H disinfectant for wiping vaccination chairs, tables and registration points.

Call 065-556-6294 | LINE: @whd268