Wet Weather May Lead to Unexpected Disease Concerns This Fall

Standing water may further the spread of Lepto hardjo-bovis

After flooding and wet weather in some parts of the country, producers are anxiously looking forward to a drier fall. However, standing water may cause more than just a logistical headache for producers. The excess moisture also may help further the spread of the Lepto hardjo-bovis organism,1 robbing cattle of reproductive performance and producers of profitability.

Lepto hardjo-bovis is transmitted through membranes of the eyes, nose, mouth and even the skin when uninfected animals come in contact with urine of infected animals directly, or contaminated water.1

Perhaps more alarming, says to Jon Seeger, DVM, Veterinary Operations, Pfizer Animal Health, is that many producers may not realize their herds may be infected with Lepto hardjo-bovis, especially if the disease has been established for a long period of time.

“A common clinical sign of Lepto hardjo-bovis is embryonic loss,2 so producers may think their cattle just aren’t settling,” Dr. Seeger says. “However, if Lepto hardjo-bovis is to blame, producers may notice lower pregnancy rates, fetal loss and general reproduction problems. The bottom line is Lepto hardjo-bovis causes more open cows — they may breed eventually, but they’ll be a cycle or two behind.”2

Even though producers may not perceive Lepto hardjo-bovis as a problem on their operations, research has shown that 42 percent of tested herds were infected.3

To help keep Lepto hardjo-bovis from depriving cattle of their reproductive performance — and cheating producers out of profits — Dr. Seeger recommends producers talk to their veterinarians to find the right reproductive vaccine to combat Lepto hardjo-bovis.

“Producers should start by talking to their veterinarians,” Dr. Seeger says. “Then, together they can evaluate their herd’s needs to decide what will work best for their individual operation.”

Additionally, Dr. Seeger advises producers to look for a complete reproductive vaccine that helps provide protection against Lepto hardjo-bovis, plus five major viral pathogens, and has duration of immunity label claims, such as Bovi-Shield GOLD FP® 5 L5 HB.

Part of a comprehensive line of reproductive vaccines, Bovi-Shield GOLD FP 5 L5 HB helps provide protection against infectious bovine rhinotracheitis (IBR) virus, parainfluenza type 3 (PI3) virus, bovine respiratory syncytial virus (BRSV) and bovine viral diarrhea (BVD) virus Types 1 and 2. What’s more, Bovi-Shield GOLD FP 5 L5 HB helps offer at least 365 days of protection from IBR abortions, BVD Types 1 and 2 persistent infection, Lepto hardjo-bovis infection, and Lepto hardjo-bovis urinary shedding and kidney colonization.

“Extra moisture from a wet spring and summer may bring an added risk of Lepto hardjo-bovis infections, so producers need to take reproductive protection to the next level,” Dr. Seeger says. “With their impressive duration of immunity and the added convenience of protection against Lepto hardjo-bovis and five viral pathogens with just one shot, Bovi-Shield GOLD FP 5 L5 HB products can help them do just that.”

LABEL INDICATIONS: The Bovi-Shield GOLD line and PregGuard GOLD FP 10 are recommended for vaccination of healthy cows and heifers approximately one month prior to breeding. These products also
can be administered to pregnant cattle provided they were vaccinated, according to label directions, with any
Bovi-Shield GOLD FP or PregGuard GOLD FP vaccine prior to breeding initially and within 12 months thereafter. Failure to follow label directions may result in abortions. The Bovi-Shield GOLD line may be administered to calves nursing pregnant cows, provided their dams were vaccinated within the last 12 months as described above. To help ensure safety in pregnant cattle, heifers must receive at least 2 doses on any Bovi-Shield GOLD FP or PregGuard GOLD FP product with the second dose administered approximately 30 days prebreeding.

For more information, contact:

Rebecca Lambert                                                         
Pfizer Animal Health                                                     

Wendy Mayo
Bader Rutter

1 Floyd JG. Leptospirosis in cattle. Alabama Cooperative Extension System. 1994. Available at: www.aces.edu/pubs/docs/A/ANR-0858/ANR-0858.pdf. Accessed March 12, 2010.



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