6.—(1) Part I of Schedule 1 to the principal Regulations shall be amended by the addition after the disease numbered B9 (Infection by Streptococcus suis) of the diseases specified in the first column of the Schedule to these Regulations and of the occupations set against those diseases in the second column of that Schedule.
(2) In Schedule 4 to the principal Regulations after the entry relating to the disease numbered B9 (Infection by Streptococcus suis) there shall be inserted–
(a)in the first column the words–
“B10.—(a) Avian chlamydiosis
B10.—(b) Ovine chlamydiosis
B11. Q fever”;
(b)in the second column against each of the diseases referred to in sub-paragraph (a) above the date “9th August 1989”.