Despite the superior filtration capability of N95 filtering facepiece respirators measured in vitro, insufficient clinical evidence has been published to determine whether standard surgical masks and N95 filtering facepiece respirators are equivalent to preventing respiratory infections in healthcare workers. Adults in intensive care units (ICU) have a higher risk of acquiring an<unk> . A combination of topical and systematic antibiotics taken prophylactically can prevent infection and improve adults' overall mortality in the ICU for adult patients receiving mechanical ventilation for at least 48 hours, and topical antibiotic prophylaxis probably reduces respiratory infections but not mortality. However, the combination of treatments cannot rule out the relevant contribution in the systemic component of the observed reduction of mortality. There is no sufficient evidence to recommend that antibiotics be used to prevent complications from an<unk>  of unknown cause in children under the age of 5 years old. High-quality clinical research in the form of randomized controlled trials assessed the effectiveness of Vitamin D, another review of poorer quality RCTs addressed the effectiveness of immunostimulants for preventing<unk> s. Despite some uncertainty due to small study sizes, there is some evidence that exercise may reduce severity of symptoms but had no impact on number of episodes or number of symptom days per episode. Viruses that cause<unk>  are more transmissible at very high or low relative humidity; ideal humidity for indoor spaces is between 40 and 60%. Therefore, relative humidity in this range can help lessen the risk of aerosol transmission.
Respiratory tract infection
Lower respiratory tract infection
Upper respiratory tract infection
Respiratory disease
Mouth infection
Pulmonary aspiration
Smoke inhalation
Airway obstruction