What Diseases Do Aphids Spread?

What Diseases Do Aphids Spread? Four aphid-bome viruses infect beans. They are bean common mosaic virus (BCMV), bean yellow mosaic virus (BYMV), cucumber mosaic virus (CMV) and alfalfa mosaic virus (AMV). How do aphids spread? Indoors, aphids spread between plants by flying or crawling. Aphids cause damage by sucking sap from new growth on plants.