How Measles Attacks | Motherboard

How Measles Attacks | Motherboard: The "secondary attack rate" for people exposed to the virus is upwards of 90 percent. To put that into perspective, the secondary attack rate for the flu is ​between 10 and 20 percent and around ​3 percent for full-blown tuberculosis, while the risk of HIV transmission is roughly around 1 percent per exposure (a rough average of exposure types). Using ​the r_0 value for measles—how many secondary infections are likely to result from a primary infection—it's about the most infectious thing going with a value of 18. HIV is down at 4 infections per primary and the mumps comes in closest at 10.