Cosmos (Sept. 21) -- The speed with which viruses inject their DNA into host bacteria governs the course of subsequent infection, U. of I. researchers have found. A team led by professor Alex Evilevitch, an expert in virus biophysics at Illinois, discovered that if multiple viruses released their DNA into a cell all at once, it was likely to be incorporated into the existing DNA and a period of latency would occur before infection became evident.