Categories twitter-es 🔎 #COVID19 messenger RNA (mRNA) vaccines are not new 😮 Researchers have been studying and working with them for decadesadmin - 11:30, 14 de noviembre de 2021353 0 🔎 #COVID19 messenger RNA (mRNA) vaccines are not new 😮 Researchers have been studying and working with them for decades 🧑🏾🔬 👉🏾 mRNA vaccines protect against disease without the serious consequences of getting sick. #GetVax 🩹❤️ ➕ INFO ➡️ paho.org/es/vacunas-con… https://t.co/CnHHpPDOF7 0