Send the following on WhatsApp
Continue to Chat50. The History of Smallpox: How did we eradicate the disease and what can it teach us? (English Vocabulary Lesson) https://thinkinginenglish.blog/2021/02/11/50-the-history-of-smallpox-how-did-we-eradicate-the-disease-and-what-can-it-teach-us-english-vocabulary-lesson/