Canterbury repopulating two at a time
Canterbury mums have given birth to 21 sets of twins in the past six weeks.
Fifteen sets were born in June and seven sets have been born this month, the Canterbury District Health Board says.
Christchurch couple Richard and Jodie Gould "had a very strong feeling" they were having twins.
"We've got lots of twins in the family and I just knew . . . Pretty much as soon as I got pregnant I told my husband, ‘We are having twins'," Jodie Gould, 35, said.
Jesse and Keisha were born at Christchurch Women's Hospital on July 1 and spent two weeks in the neonatal unit.
"We came home on Saturday," Gould said. "I'm over the moon and they are doing really well, but there are times when I walk around like a zombie and sometimes don't know how I'm powering through."
Gould said she met four other mothers who were expecting twins while she was pregnant, and all of them had joined the Christchurch Multiple Birth Club.
She said that when Jesse and Keisha were in hospital there were 11 sets of twins in the neonatal unit in total.
Nicola Burton, 37, was one of the mothers Gould met.
Burton and husband Ian welcomed Oliver and Lucas into the world on July 2.
"We were really shocked when we found out I was having twins because we don't have any twins on either side of the family and it was just unexpected," she said.
Burton said the boys were healthy and she was happy to have them home.
Multiple birth club president Katrina Moor said 21 sets of twins was "quite impressive". In April this year, 12 sets of twins were born, and four sets were born in May.
In June and July last year, nine sets of twins were registered.
Moor said that 10 years ago the average would have been about six to eight sets a month. The club had 240 members at present.