LLNL physicist Matthias Frank measures the movement of DNATrax surrogate particles in a test chamber. Lawrence Livermore National Laboratory (LLNL) scientists are leveraging their extensive experience studying the movement of airborne hazards to better understand the movement of virus-like particles through the air and to identify effective countermeasures. DNATrax released in a conference room. While the burden of airborne diseases is known to be large, its true scope is underappreciated. LLNL researchers recently published a review in the journal Applied and Environmental Microbiology that highlights well-established cases of airborne viruses, bacteria and fungal pathogens causing disease in plants, animals and humans over distance scales ranging from a few meters to continental.