यदि एक नर्स को हेपेटाइटिस बी वायरस से संक्रमित सुई से निडल-स्टिक इंजरी (सुई चुभना) हो जाती है, तो प्राथमिकता के आधार पर तत्काल नर्सिंग कार्रवाई क्या होनी चाहिए?

Which principle of hospital practice directly minimizes cross-contamination when the same healthcare worker attends multiple patients sequentially?

Sanitation workers must decide between two disinfectants to control an outbreak of a drug-resistant bacterial infection in a surgical ward. Disinfectant A is highly effective against spores, while Disinfectant B is faster acting but less effective on spores. Based on principles of infectious disease epidemiology, which should they select and why?