Public health experts have noticed this latest Covid wave is worsening as fewer Kiwis are getting vaccination boosters and tests, and it's renewed debate about sick leave.

Wastewater analysis from PHF Science shows that the number of cases is at the highest rate it's been for over six months, and Health NZ says there's been 50 hospitalisations and 19 deaths from the virus this week.

Otago University associate professor Paula O'Kane says it's important to let sick leave accrue every year - and stay consistent as Kiwis move jobs.

"It would give people access to better sick leave, it might discourage misuse of sick leave, and when people are actually sick for a longer period of time, they're better covered. So it would really help to deal with issues around people's long-term illness, for example." 

LISTEN ABOVE