None. The foal could be hurt or killed
Horses need a tetanus shot once at year and probably a booster if they are injured with cuts or open wounds.
pregnant women
Unless you know how to give vaccinations let your vet do it.
A mare should have all of her regular vaccinations and possibly a booster in her 9th month.
two
for Howrse, it's 3
They don't have to have any
No they should not. They should receive the killed virus shot, not the nasal spay. Of course always check with your doctor first!
A foal gets his immunity from the first milk from the mare called colostrum. As long as the mare is healthy and current on her vaccinations the foal is good to go for about six months. At this point it is good to consult your vet to see what he recommends but this is about the time (give or take) to start his life-long series of vaccinations.
Miniature horses require the same vaccinations as full-sized horses because they are susceptible to the same diseases. In the US, all horses should be vaccinated against Eastern and Western Equine Encephalytis, Tetanus, West Nile Virus and Rabies. These are considered "core vaccinations" by the American Association of Equine Practitioners. Besides these "core vaccinations", there are "risk-based" vaccinations such as Potomac Horse Fever, Strangles, Influenza, Equine Herpes Virus 1 & 4, Equine Viral Arteritis, etc. These vaccines are given based upon the risk of exposure. Horse owners should contact their veterinarian to get recommendations for their horses based upon the specifics of their situation.
you need to give the mare a rhino shot in the 3rd, 6th and 9th months of pregnancy
All horses should be vaccinated against tetanus.