Here is the info from the vaccine manafacturer
CHICK-N-POX TC
Zoetis
Fowl Pox Vaccine
Live Virus
For veterinary use only
Read in full, follow directions carefully.
Chick-N-Pox
TC, brand of Fowl Pox Vaccine, is recommended for wing-web stab of healthy chickens of any age against fowl pox.
Store this vaccine at not over 45°F (7°C).
Do not vaccinate within 21 days before slaughter.
Use entire contents when vial is first opened.
Burn vaccine container and all unused contents.
WHEN TO VACCINATE
Broiler or other Growing Chickens: Vaccination with Chick-N-Pox
TC may be performed as early as 1 day of age where ever there is a history of early occurrence of fowl pox. If chicks are vaccinated against fowl pox at 1 day of age, revaccinate them at 12 weeks of age with Poxine
.
Laying Chickens: If laying chickens are not adequately protected and are threatened by fowl pox occurring nearby, vaccinate them immediately with Chick-N-Pox
TC.
DIRECTIONS
1. Rehydrate 1 vial of vaccine with 1 vial of diluent.
2. Remove aluminum seal and rubber stopper from vaccine vial and diluent vial. Avoid contamination of the stopper and vial contents.
500 Doses
3. Pour the diluent into the vial containing the vaccine.
4. Put stopper back in place and shake the vial until all of the contents are dissolved. The vaccine is then ready for use.
1,000 Doses
3. Pour approximately one-half the diluent into the vaccine vial. Replace stopper and shake gently until contents are dissolved.
4. Pour all the reconstituted vaccine back into the remaining diluent in the diluent bottle. Replace diluent stopper and gently mix. The vaccine is then ready for use.
5. Hold individual bird and spread wing with the underside facing upwards.
6. Dip the vaccinator tool into the vaccine, wetting both needles.
7. Stick the needles through the web of the wing, avoiding blood vessels, bones, and the wing muscle. The vaccine should not touch feathers, the head of the birds, or the skin except at the site of vaccination.
HOW TAKES APPEAR
The usual take consists of some swelling at the site of the puncture as early as the fourth day following vaccination. The swelling increases during the next five days until a scab is formed. Revaccinate birds that do not show takes.