Can breathing circuit filters help prevent the spread of influenza A (H1N1) virus from intubated patients?

Jan F. Heuer, Thomas A. Crozier, Glenn Howard & Michael Quintel
Introduction: In March 2010, more than 213 countries worldwide reported laboratory confirmed cases of influenza H1N1 infections with at least 16,813 deaths. In some countries, roughly 10 to 30% of the hospitalized patients were admitted to the ICU and up to 70% of those required mechanical ventilation. The question now arises whether breathing system filters can prevent virus particles from an infected patient from entering the breathing system and passing through the ventilator into the...