No country can claim to be free from health-care associated infections, therefore, improvement of infection prevention and control (IPC) strategies is essential. WHO recommends the use of multimodal improvement strategies to implement IPC interventions. These include each item of standard and transmission-based precautions according to national guidelines or standard operating procedures and under the coordination of the national IPC focal point (or team, if existing). This publication consists of three focused improvement tools, called “aide-memoires”, which focus on 1) respiratory and hand hygiene, 2) personal protective equipment, and 3) environmental cleaning, waste and linen management, all elements of standard, droplet/contact and airborne precautions.