Particle Settling Velocities
Particle Size μm
100.0
10.0 (PM10)
5.0
1.0
0.5
0.3
0.1
Settling time from a height of 120 cm/4 Ft.
4.0 seconds
6.8 minutes
19.2 minutes
9.4 hours
34.3 hours
17.8 days
42.5 days
Diseases spread by Droplet or Airborne Transmission
Disease
Organism
Clinical Manifestations
Adenovirus
Adenovirus
Rhinitis, pharyngitis, malaise, rash, cough
Influenza
Influenza virus
Fever, chills, malaise, headache cough, coryza, myalgias
Measles (Rubeola)
Rubeola virus
Fever, rash, malaise, coryza, conjunctivitis, Koplik's spots, adenopathy,
CNS complications
Meningococcal disease
Neisseria meningitides
Fever, headache, vomiting, confusion, convulsions, petechial rash,
neck stiffness
Mumps
Mumps virus
Painful/swollen salivary glands orchitis, meningoencephalitis
Pertussis
Bordetella pertussis
Malaise, cough, coryza, lymphocytosis, "whooping" cough
Parvovirus B19
Parvovirus B19
Rash, aplastic anemia, arthritis, myalgias
Respiratory Syncitial Virus
RSV
Often asymptomatic; respiratory symptoms
Rubella
Rubella virus
Fever, malaise, coryza, rash
Tuberculosis
Mycobacterium species
Fever, weight loss, fatigue, night sweats, pulmonary disease,
extra pulmonary involvement including lymphatic, genitourinary,
bone, meningeal, peritoneal, miliary
Varicella
Human Herpesvirus 3
Chickenpox or zoster presentation