Viral wart (papilloma) prevention for cattle. Often used in a treatment effort as well, to stimulate immunity against the strains of wart virus. Give calves 10 ml SQ, injected at 2 sites along the neck. Give cattle 15 ml. Repeat in 3-5 weeks. Cattle warts are caused by an infectious and contagious virus (bovine papilloma virus; BPV) that spreads via contact from infected cattle to non-infected cattle. Warts are caused by species specific viruses, which means that people cannot get warts from cattle or vice versa. Warts are caused by infection with the contagious bovine papillomavirus. Four types of the virus are known to produce skin lesions. All have been described as hardy. Two of the viral types cause most of the warts found on the head and neck of cattle. They will survive in the environment for weeks or months if protected by pieces of tissue such as a shed wart or bits of tissue on a halter. Because of the infectious nature of the wart virus, animals with warts are disqualified from shows and exhibitions.
Calves are most susceptible; few cases of warts seen in cattle over 2 years of age. Occasionally, warts are found on the teats of lactating dairy cows. Calves are easily infected the papillomavirus entering the cut or abraded skin. All too frequently calves are inadvertently infected when tattooed or ear tagged for identification purposes. In fact, it is not unusual to find an entire tattoo overgrown with a mass of warts. Warts will appear 1 to 6 months after inoculation with the virus. Warts often spread from the ear to other sites on the head and neck. Papillomavirus is widely distributed in cattle. Cattle are the main source and natural reservoir of infection by the virus; but, halters, ropes, and instruments can serve as a potential source of infection. Not all animals carrying the virus will have warts. It can be transmitted from the inapparent carrier to the susceptible calf.
Rachel Endecott exlpains several approaches to dealing with warts – surgical removal, crushing at first sign and vaccination. There are 6 strains of bovine papilloma virus and each has an affinity for different regions on the animal. BPV can be transmitted by direct contact, or indirectly by feeders, water tanks, halters, or other equipment or working facilities. Most BPV strains are mildly pathogenic and cause only minor problems to the animal. Cattle warts are usually dry, white to tan colored growths that protrude from the skin and may have a horny surface.
Features of Cattle Wart Vaccine
Warts appear around 2 months after exposure and may last a year or more. Immunity usually developed 3-4 weeks after the initial infection, but warts may recur occasionally. The wart virus tends to be isolated in the wart and not circulating in the bloodstream, so the animal’s immune system may not be well stimulated by the virus. This may result in an extended time to develop immunity to the virus and see regression of the wart. Warts are considered a self-limiting condition, although the duration of the warts can vary considerably. A variety of treatments have been promoted without agreement on effectiveness.
Calf: Inject 5 ml subcutaneously in 2 separate sites along the side of the neck.
Cattle: Inject 7.5 ml subcutaneously in 2 separate sites along the side of the neck.
Repeat at 3 to 5 weeks. Historically, annual vaccination is recommended. Contact veterinarian for advice.
Papillomaviruses are the cause of cutaneous warts in cattle. These viruses have considerable host specificity. Warts are spread by direct contact with infected animals, infection gaining entry through skin abrasions. Animals with extensive cutaneous wart lesions may develop secondary bacterial infections. Teat warts on dairy cows can interfere with milking. Surgery and/or vaccination are the most common forms of treatment and prevention. Colorado Serum Company’s Wart Vaccine uses bovine warts from different sources in order to provide a broad spectrum protection against a variety of papillomavirus isolates.
Directions For Use
Do not vaccinate within 21 days before slaughter. Safety in pregnant animals is unknown. Shake well before use. Use entire contents when first opened. Store at 2° – 8° C. Do not freeze. Do not mix with other products.
Prices of Cattle Wart Vaccine
$27.29 – $46.69