Biological warfare is the use of infectious diseases to harm or kill humans, animals, or crops. Some synonyms for biological warfare include bio-terrorism, biowarfare, germ warfare, and microbiological warfare. These terms all refer to the same concept where diseases, viruses, or bacteria are used as weapons. Biological warfare can be conducted through the contamination of food, water, or air, and typically relies on highly infectious and deadly agents. The development and use of biological warfare is prohibited by international law, including the Biological Weapons Convention which was ratified in 1975. Moreover, biological warfare is a serious threat to public health and global security, and the international community must continue to collaborate to prevent outbreaks and mitigate their impacts.