By Alexandra Valencia QUITO (Reuters) – Forty-three prisoners remain at large after escaping a prison in northern Ecuador, the SNAI prisons agency said on Monday, as security forces continued operations throughout the country. President Daniel Noboa declared a 60-day state of emergency last week, including a nighttime curfew, and designated 22 criminal groups as terrorists. The recent explosion of violence – including the storming by gunmen of a live TV news broadcast, explosions in several cities and the kidnapping of police officers – appears to be a response to Noboa’s plans to address Ecua…