
Francisella tularensis
Francisella tularensis is a highly infectious bacterium that causes tularemia, a disease affecting humans and animals. It is usually transmitted through contact with infected animals, contaminated water, or bites from ticks and insects. Symptoms can include fever, skin ulcers, swollen lymph nodes, and respiratory issues, depending on the infection site. Although rare, it can be serious if not treated promptly with antibiotics. Tularemia is considered a biothreat due to its potential for airborne spread and low infectious dose. Proper handling of animals and insect control can help prevent infection.