41. People with certain medical problems are vulnerable because the vaccinia can multiply too much in them. 42. But they predicted brain inflammations or the uncontrolled spread of vaccinia pox, not heart attacks. 43. They use another virus, vaccinia . 44. The vaccinia virus is commonly used as a prototype and can be consulted for further information. 45. Vaccinia , cowpox, and monkeypox viruses can infect both humans and other animals in nature.46. However, smallpox and yellow fever vaccines increase the risk of infants developing vaccinia and encephalitis. 47. The smallpox vaccine is derived from a similar virus known as vaccinia , which is relatively harmless. 48. If you get immunized with vaccinia , you can infect people around you from your vaccinia scab, 49. If you get immunized with vaccinia, you can infect people around you from your vaccinia scab, 50. One is a modified vaccinia called MVA, which has an unusually low rate of adverse reactions.
