Video Summary

A new study has found that a single spore of the fungus Aspergillus fumigatus can cause a deadly infection in mice. The study, published in the journal Nature, found that the spore was able to evade the immune system and cause a lung infection that was fatal in 90% of the mice. The researchers say that the findings could help to explain why A. fumigatus is such a common cause of serious lung infections in people with weakened immune systems.