Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Transmission and risk factors: Occupational transmission. John & Penny Hubley. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/W0026660/full/800%2C/0/default.jpg)
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Transmission and risk factors: Occupational transmission. John & Penny Hubley. Source: Wellcome Collection.