Reporting. A person performing poultry disease diagnostic services shall report within 48 hours of diagnosis to the Secretary the diagnosis of infection of poultry by Salmonella pullorum, Salmonella gallinarum, or Salmonella serotype enteritidis. Investigation. The Secretary shall conduct an immediate investigation upon receipt of a report of pullorum, typhoid, or Salmonella serotype enteritidis infection. Flock Infected with Salmonella. The Secretary shall quarantine any flock found to be infected with Salmonella pullorum, Salmonella gallinarum, or in the case of a commercial flock, only when infected with Salmonella serotype enteritidis. To prevent the further spread of these diseases, the Secretary may not release the quarantine until the: Flock is disposed of or retested and certified by the Secretary; and Premises have been cleaned and disinfected. Hatching Eggs Infected with Salmonella. The Secretary shall quarantine a hatchery found to have eggs from a flock infected with Salmonella pullorum, Salmonella gallinarum, or Salmonella serotype enteritidis. To prevent the further spread of these diseases, the Secretary may not release the quarantine until the: Hatching eggs have been disposed of; and Hatchery has been cleaned and disinfected. If biosecurity can be maintained, the Secretary may permit hatching eggs infected with Salmonella serotype enteritidis to be held for chicks and the live birds treated as an exposed flock. The Secretary, however, may not release the quarantine unless and until the birds have been tested and found negative for Salmonella serotype enteritidis under the procedures outlined in Regulation .05.