MERS-CoV infections in the Arabian Peninsula are the result of several hundred spillover events from viruses circulating in camels into the human population.

Pathogen natural history, epidemiological knowledge, human behavior and epidemic progression determine whether symptom screening and questionnaires are effective barriers to geographic spread of infection by travelers.

NPC1 is a genetic determinant of filovirus susceptibility in bats, and some variations in bat NPC1 may reflect host adaptations to reduce filovirus replication and virulence.

Evolutionary innovation and turnover in the IFIT1 antiviral gene family has led to diverse repertoires of antiviral specificity across mammals.

Interactions between viral genomes within the same cells can impact the selection of drug-resistant variants and this has been finessed by hepatitis C virus.

Endogenous double-stranded RNA is generated in human cells and leads to RNase L activation and consequent cell death unless neutralized by adenosine deaminase acting on RNA1 (ADAR1).

Influenza evolution within infected hosts recapitulates many evolutionary dynamics observed at the global scale.

Novel virus-host systems yield insights into how Lepidopterans (moths and butterflies) combat RNA virus infection and reveal that poxvirus A51R proteins can suppress the host's immune system and stabilize microtubules in host cells.