Effects of Wood Smoke Particles on Influenza-induced Nasal Inflammation in Normal Volunteers

Inclusion Criteria: 1. Normal lung function, defined as (Knudson 1976/1984 predicted set): FVC \> 75 % predicted for gender, ethnicity, age and height; FEV1 \>75 % predicted ; FEV1/FVC ratio \>0.70 and \< 0.90. 2. Oxygen saturation of \> 94% 3. Normal blood pressure (Systolic between 140 - 90, Diastolic between 90-60 mm Hg) 4. Symptom Score no greater than 6 (out of a possible 39) for total symptom score 5. On the day of a challenge, body temperature must be no greater than 37.8 degrees, measured orally Exclusion Criteria: 1. A history of significant chronic illnesses (to include diabetes, autoimmune diseases, immunodeficiency state, known ischemic heart disease, chronic respiratory diseases such as chronic obstructive pulmonary disease or asthma, hypertension) 2. Positive pregnancy test within 48 hours of the time of challenge 3. Use of any inhaled substance (for medical or recreational purposes). Nonsmokers must have been abstinent from smoking for the prior 12 months, having not smoked more than 1 pack over the course of the previous year and does not smoke at all 1 week prior to entrance in the study. 4. Receipt of LAIV in the current season 5. History of allergy to eggs 6. Acute, non-chronic, medical conditions, including (but not limited to) pneumonia or bronchitis requiring antibiotics, febrile illnesses, flu-like symptoms must be totally resolved symptomatically for 3 weeks 7. Unspecified illnesses, which in the judgment of the investigator increase the risk associated with the experimental LAIV infection, will be a basis for exclusion. 8. Expected exposure of subject to immunocompromised individuals (who can be infected by LAIV) for the 3 weeks following LAIV inoculation