"I'm contending there were seven glaring red flags in May and the ministry took its eye off the ball," Reti, a Northland GP, told Bloomfield.
"I don't think the ministry took its eye off the ball. What I can say is that as soon as soon as we had advice that was confirmed by a specially convened technical advisory group that there was a community outbreak in Northland, we took very quick action," said Bloomfield.
Reti claimed in Parliament last week that Health Minister David Clark and the ministry knew in May that there was an outbreak of meningitis in Northland, and New Zealand.
"Initially at the beginning of the year it was general strains of meningitis. We're interested in meningococcal W. Well, in April the Ministry was first flagging that 50 per cent of their cases in April were actually meningococcal W, and the following month it was 100 per cent.
"So way back in May, the Minister and the ministry knew that there was an outbreak for meningitis in Northland and in New Zealand. In fact, the two first deaths occurred at least as early as March," Reti told Parliament last week.
He said, quoting ministry figures, that there were four cases of meningitis. That doubled in February to 10 cases. It doubled again in March to 22, with two deaths.
In April the figure rose to 29 and in May it was 39, according to the ministry's website, Reti said.
Northland DHB chief executive Nick Chamberlain told the Health Select Committee today although the DHB was pushing for a vaccination campaign in May, it knew it had to wait until it reached community outbreak status, which occurred in October.
Reti said four of the "red flags" applied to Northland DHB.
Chamberlain said Northland DHB could not predict an outbreak in the region in May but felt, from the trends, a nationwide campaign would be necessary at some stage.
"We were always really aware that we had to hit that [outbreak] level," he said.
Once it was triggered the outbreak status at the end of October a decision to initiate a vaccination campaign was made "reasonably quickly", he said.