Hospital acquired infections are common and antibiotic resistant germs exist there because this is where antibiotics are commonly used.
The bigger problem is that patients entering the hospital are likely to have compromised immune systems. All the measures taken to prevent infection, hand washing, mask and gown wearing, control of infectious waste, are almost trivial next to the preadmission status of the patient’s immune system.
Few hospitals conduct admission tests for vitamin D blood levels. Vitamin D, the sunshine vitamin, is critical for proper immune response, particularly neutrophils, which are the first-response white blood cells that literally dock up to pathogenic bacteria and blow them up.
Hospitalized patients with low vitamin D levels are far more likely to develop hospital-acquired bloodstream infections. [American Journal Clinical Nutrition Oct 2013]
What if hospitals simply gave every patient supplemental vitamin D upon admission? None do that.
One hospital took 31 patients who were vitamin D deficient upon entry to the intensive care unit and were dependent upon mechanical ventilators. Patients were given 50,000 units (IU) or 100,000 units of vitamin D3 daily for 5 consecutive days. All patients’ vitamin D levels were under 20 nanograms/milliliter of blood and rose to an average of 47.5 and 55.2 within 7 days for the respective doses. Hospital length of stay was shortened. [Journal Clinical Translational Endocrinology June 2016]
Vitamin D is stored in the liver and available for many days following mega-dose administration. Doctors inject vitamin D to provide for wintertime bone protection in postmenopausal females. A hefty dose of vitamin D prior to hospital admission ought to see most patients through an extended stay.