By RNZ
The Institute of Environmental Science and Research (ESR) has warned people that wrong information claiming to use ESR data is being circulated.
In a tweet put out by ESR yesterday afternoon, they said an "unknown individual or entity may be spreading false information regarding vaccinations and hospitilisations for measles cases".
Health and environment general manager Libby Harrison said they were shown the document by a third party, but that they didn't know how widely the document had been circulated, but that it looked like they could be on an email or an online document.
Ms Harrison said they were using data that was plainly false, but claimed to be from the ESR.