Rapid, targeted and culture-free viral infectivity assay in drop-based microfluidics.A key viral property is infectivity, and its accurate measurement is crucial for the understanding of viral evolution, disease and treatment.  We developed a rapid, targeted and culture-free infectivity assay using high-throughput drop-based microfluidics. 
drop-based microfluidics
Currently viral infectivity is measured using plaque assays, which involve prolonged culturing of host cells, and whose measurement is unable to differentiate between specific strains and is prone to low number fluctuation. 
plaque assays
Our results are comparable to traditional plaque-based assays and plaque reduction neutralization tests. 
plaque reduction neutralization tests