German scientists detected viral DNA in monkeypox patient’s rooms, but caution that surface contamination with virus DNA or viable virus does not prove that infection can occur after contact with the surfaces. During the currently evolving outbreak of monkeypox cases outside of known endemic area
, transmission is mostly driven by close physical contact with symptomatic people. While viral transmission between humans has been described previously, data on environmental contamination of surfaces is very limited.
Monkeypox is a zoonotic disease, i.e. it can be transmitted between animals and humans via direct or indirect contacts. Following the eradication of smallpox and the end of universal smallpox vaccination, monkeypox is currently the most prevalent orthopoxvirus infection in humans.In a new study, Nörz et al. swabbed surfaces in the immediate and adjacent rooms of two hospitalized monkeypox patients in Germany.
According to the authors, all the surfaces that the two patients had touched directly showed viral contamination, with the highest loads detected in both bathrooms . Fabrics such as towels, shirts, or pillowcases that the patients used frequently also showed viral contamination.The authors highlight that there currently are no definite data on what dose of virus leads to infection with monkeypox in humans.
Prevention of virus spread from symptomatic patients should be individually adapted. Based on their findings, the authors conclude that “regular disinfection of frequent hand and skin contact points during the care processes additional to regular room cleaning and surface disinfection using products with at least virucidal activity against enveloped viruses can reduce infectious virus on surfaces and thereby risk of nosocomial transmission.
Reference: “Evidence of surface contamination in hospital rooms occupied by patients infected with monkeypox, Germany, June 2022 separator commenting unavailable ” by Dominik Nörz, Susanne Pfefferle, Thomas T. Brehm, Gefion Franke, Ilka Grewe, Birte Knobling, Martin Aepfelbacher, Samuel Huber, Eva M. Klupp, Sabine Jordan, Marylyn M. Addo, Julian Schulze zur Wiesch, Stefan Schmiedel, Marc Lütgehetmann and Johannes K.
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