The virus that causes Viral TB can be transmitted in just about every way possible unlike most viruses which stick to a few ways of being transmitted. Here are those routes of transmission from most common to most rare: Airborne Waterborne Foodborne Direct contact Vector Injection Sex Pregnancy If it is airborne, early Viral TB can be mistaken for the flu. It causes respiratory symptoms within minutes to hours until it finally gets deep into the lungs and causes double pneumonia(pneumonia in both lungs). If it is waterborne or foodborne, the digestive system will be infected first but foodborne transmission is less common because chemical digestion lowers the survivability of the virus. If it is from direct contact which includes these forms of transmission: Contact with dry skin that is infected with Viral TB Sweat Bleeding wound Nasal mucus and saliva touching skin it will cause a skin infection which along with other things produces an itchy rash all over. Vectors can transmit it from humanoid to humanoid. The most common vector for disease is the mosquito. The mosquito can take blood from an infected person and inject the virus into an uninfected person via its saliva. This leads me right to the next most rare cause, injection. This is rarer but it still happens. Both of these cause sepsis which along with other things can lead to some very severe consequences. Here are some of those: Anemia Bleeding(this is primarily due to vasculitis) Pancarditis(usually goes from endocardium to pericardium) Sexual transmission is worse than any of the other more common routes of transmission. This leads to a low sperm count in males and amenorrhea in females. Both of these lower the risk of pregnancy and most pregnancies will end in a miscarriage if the virus is sexually transmitted. Pregnancy is the most rare route of transmission and is also the worst route of transmission. Now when I say that pregnancy is a route of transmission, I mean that it wasn't transmitted via sex. Rather, the virus crosses over from the mother's bloodstream to the baby's bloodstream. This almost always leads to stillbirth due to defects caused by the virus and when it doesn't lead to stillbirth, the baby still usually dies within hours to days after birth due to defects and dehydration.