Outbreak: #Coronavirus (subtype #OC43)

Facility: Golden Birches Terrace
Facility Type: LTC Home
Unit/Floor/Area: Facility Wide
Location: #BlindRiver #Ontario
Facility Tracking Hash: #APHU0003

Date: 2026-03-20

Public Health Unit: Algoma Public Health Unit
PHU Tracking Hash: #OnObAPHU

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Outbreak: #Parainfluenza Virus + #Coronavirus (#OC43) + Human #Metapneumovirus (#HMPV)
Facility: Rubidge Retirement Residence
Facility Type: Retirement Home
Unit/Floor/Area: Facility Wide
Location: #Peterborough #Ontario
Date: 2025-06-09

Public Health Unit: Haliburton Kawartha Northumberland Peterborough Health Unit
Facility Tracking Hash: #HKNP0026
PHU Tracking Hash: #OnObHKNP

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Outbreak: #Coronavirus (#OC43)
Facility: Fairhaven
Facility Type: LTC Home
Unit/Floor/Area: Riverside Special Care
Location: #Peterborough #Ontario
Date: 2025-05-14

Public Health Unit: Haliburton Kawartha Northumberland Peterborough Health Unit
Facility Tracking Hash: #HKNP0010
PHU Tracking Hash: #OnObHKNP

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Outbreak: #Parainfluenza Virus + #Coronavirus (#OC43)
Facility: Extendicare Peterborough
Facility Type: LTC Home
Unit/Floor/Area: Third Floor
Location: #Peterborough #Ontario
Date: 2025-05-09

Public Health Unit: Haliburton Kawartha Northumberland Peterborough Health Unit
Facility Tracking Hash: #HKNP0018
PHU Tracking Hash: #OnObHKNP

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Outbreak: #Coronavirus (#OC43)
Facility: Extendicare Lakefield
Facility Type: LTC Home
Unit/Floor/Area: Otonabee
Location: #Lakefield #Ontario
Date: 2025-03-14

Public Health Unit: Haliburton Kawartha Northumberland #Peterborough Health Unit
Facility Tracking Hash: #HKNP0025 (formerly #PTHU0001)
PHU Tracking Hash: #OnObHKNP (formerly #OnObPTHU)

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Outbreak: #Coronavirus (#OC43)
Facility: Riverview Manor
Facility Type: LTC Home
Unit/Floor/Area: Facility Wide
Location: #Peterborough #Ontario
Date: 2025-02-24

Public Health Unit: Haliburton Kawartha Northumberland Peterborough Health Unit
Facility Tracking Hash: #HKNP0014
PHU Tracking Hash: #OnObHKNP

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Outbreak: #Coronavirus (#OC43)
Facility: Fairhaven
Facility Type: LTC Home
Unit/Floor/Area: Facility Wide
Location: #Peterborough #Ontario
Date: 2025-02-24

Public Health Unit: Haliburton Kawartha Northumberland Peterborough Health Unit
Facility Tracking Hash: #HKNP0010
PHU Tracking Hash: #OnObHKNP

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#Betacoronavirus #Infection #Outbreak, São Paulo, #Brazil Fall 2023, Emerg Infect Dis. https://wwwnc.cdc.gov/eid/article/30/3/23-0990_article

-- We report a #human CoV #OC43 infection #outbreak in hospitalized patients and #HCWs in São Paulo, Brazil, occurring after SARS-CoV-2 cases disappeared. Infection was associated with HCWs in 5 (29.4%) patients. Routine surveillance including a respiratory virus panel can improve coronavirus detection in both healthcare professionals and patients.

Talk of #OC43 causing 1890 "Russian flu" pandemic then milding out.

This is a wild guess.

Original 2005 article:
- Authors state 1890 pandemic was flu
- Antibodies found in certain generations support was flu
- They then state "[h]owever, it is tempting to speculate about an alternative hypothesis, that the 1889-1890 pandemic may have been [a bovine corona jumping to humans']"

This article used to suggest viruses "mild" with time, which is simply not true

[Sept 21, 2021 Twitter]

Clinical evidence “Russian flu” pandemic of 1889-1891 might have been a coronavirus pandemic

Contemporary medical reports from Britain and Germany on patients suffering from a pandemic infection between 1889 and 1891, which was historically referred to as the Russian flu, share a number of characteristics with COVID-19.

Fifteen years ago, the discussion of the agent responsible took a new turn with an unexpected observation from virologists working at KU Leuven in Belgium. They sequenced the human coronavirus OC43 (HCoV-OC43), and showed that it shared very high nucleotide sequence identity with bovine coronavirus (BCoV).

Notably, with an estimated 4.3 × 10-4 substitutions per site per year, the time to the most recent common ancestor of HCoV-OC43 and BCoV was dated by three methods to 1891, 1873 and 1890.

https://sfamjournals.onlinelibrary.wiley.com/doi/full/10.1111/1751-7915.13889

#covid #oc43 #virology