Experts say the wait was indefensible and possibly delayed identification of the outbreak.
The government will interview the young people and their parents before and after they try the limits to assess their impact.
For many, the promise of getting a foot on the property ladder has turned into a nightmare.
Nathan Newby, who used kindness to persuade the "lone-wolf terrorist" to abandon his plan, is being awarded the George Medal.
Health officials say it is vital to remember that young farm animals can carry germs that cause illness.