MedlinePlus website on travelers’ health is ad-free. Recent links for coronavirus COVID-19 travel information from the CDC have been updated. International travel and Covid-19, mask requirements, vaccination status are included. The site also covers topics for consumers who travel, such as jet lag, ears and altitude, motion sickness, in-flight medicine, traveler first aid kits, cruise ships, Zika, vaccine recommendations, pregnancy and flying. Updated August 2021.