 [ Symptoms ] i have tendonitis in one of my knees which causes pain when doing jumping exercises can supplements reduce the pain [ Disease ] based on what you witnessed there definitely could be an improvement of hygiene practices i have no idea if your grandfather was exposed to any pathogen but breaches in hygiene are high on the list of infections many times hands are washed frequently usually after andor before each patient and new fresh gloves are used for each patient patient or their families may not witness the handwashing if it occurred in another room or out in the hall but a change of gloves between patients is mandatory