Mare Reproductive Loss Syndrome (MRLS) refers to early pregnancy loss and abortions in pregnant mares and a range of other conditions in horses, that were first described in Kentucky (USA) in 2001-2002. MRLS was subsequently found to have been associated with the Eastern Tent caterpillar (ETC). There are numerous web pages of information about MRLS … Continue reading What is the difference between EAFL and MRLS?