By RNZ
Explainer - From early January, New Zealanders who have had two doses of the Covid-19 vaccine for at least four months can get their booster dose.
The timing of the rollout had previously caused some confusion about when people should go and how it all works.
There's also a difference between booster doses and third primary doses.
The Pfizer vaccine is being used in New Zealand for boosters, regardless of what vaccine was used for earlier doses.
The booster is different to the third primary dose recommended for people who are immunocompromised.
People eligible for a third primary dose can access a booster dose six months after receiving their third primary dose.
In early December, the Government announced it would shorten the required gap between the second dose and booster, from six months to four months.
For people who don't mind going to a walk-in vaccination centre, they are able to get their booster dose from January 5. Find locations by clicking here.
For those who prefer to book in, appointment slots will be available from January 17 via Book My Vaccine online.
While the rollout with shortened intervals officially starts in early January 2022, people who have had their second shot for six months are encouraged to go get their booster dose right away.
Others wanting to get in early before January 5 were advised to check with their local vaccination provider to ensure they have appointments and supply available.
The Ministry of Health has said there were plenty of booster doses available and no one would miss out.
If you cannot book online, you can call the Covid-19 Vaccination Healthline on 0800 28 29 26 (8am to 8pm, seven days a week).
Interpretation services, and text, email and NZ Relay options for deaf and hearing impaired are available if you need them via the 0800 number.
There is also a specialist team for disabled people (option 2 on the 0800 number).
You can also make an appointment with your doctor if they are providing Covid-19 vaccines.
Healthcare and border workers have been the priority for booster doses since large numbers of people in those industries had their primary doses at least six months ago.
When you arrive for your booster, the date of your last dose will be checked in the booking system to ensure you have gone through the required interval period.
People aged 12 years and older have so far been able to get their primary Covid-19 vaccine courses throughout 2021, but the booster dose is currently only going to be available for those aged 18 years and above.
(For most people, a primary course is two doses, for some people a primary course could be three doses.)
It is recommended that pregnant people aged 18 and older receive a booster dose to help protect them and their baby against Covid-19.
The booster vaccine can be given at any stage of pregnancy, at least four months after the primary course (for most people, this is two doses), the ministry said.
Pregnant women should discuss the timing of their booster with their midwife, obstetrician or general practitioner.
If people had their Covid-19 vaccination overseas, they can get still get the Pfizer booster once they have gone through the required interval from their last dose.
You may experience some side effects with the booster similar to that of the second dose of the Pfizer vaccine, according to the Ministry of Health.
These include muscle aches, pain at the injection site, headaches, nausea, and feeling tired or fatigued. For most people, these tend to be mild effects and don't last long.
Some side effects are more serious but very rare, like a severe allergic reaction or an inflammation of the heart (myocarditis).
An online reporting form for adverse events following immunisation with Covid-19 vaccines is now available.
If you develop difficulty breathing, a racing heart, chest pain or feel faint immediately or in the days after the vaccine, you should seek medical attention.
If you're unsure about your symptoms or if they get worse, call Healthline: 0800 358 5453.
You do not need to have a booster to be certified as "fully vaccinated" for My Vaccine Pass or an International Travel Vaccination Certificate.
If you do get a booster dose, it will be added to your My Covid Record and you can create another pass.
Early in December, the Government announced Cabinet has agreed in principle that where workers are required to be vaccinated, this mandate will now extend to booster doses.
Border and health workers will be required to have their booster dose by the end of January, or not later than six months after their second dose for those recently vaccinated.
It will then be extended to all others covered by vaccination mandates from March 1. These changes are expected to be confirmed this month.
The Ministry of Health says data from Pfizer shows that a booster dose is 95.6 per cent effective against the coronavirus, including the Delta variant, compared to those who did not receive a booster.
At this stage, there is no data available on the duration of protection against infection and disease following a booster dose.
The ministry said current evidence shows that after six months of a full vaccination course, protection against Covid-19 is reduced and so a "top-up" vaccine will help boost immunity against the virus.
"We already know that booster vaccinations significantly lift an individual's immunity, reducing the spread and the severity of Covid-19.
"Data is emerging now that booster doses of Pfizer provide better protection than two doses do when it comes to the Omicron variant."
The UK Health Security Agency (UKHSA) analysed more than 600,000 confirmed and suspected cases of the Omicron variant up to December 29 in England and found a booster vaccine is 88 per cent effective at preventing people ending up in hospital with Covid-19.
The new data confirms that two doses of the AstraZeneca, Pfizer or Moderna vaccines offers little protection against being infected with Omicron.
Covid-19 Response Minister Chris Hipkins has said that soon it is expected that every case coming into New Zealand's border would be of the highly infectious Omicron variant.
The Government hopes having widespread administration of the Covid-19 vaccine booster will help prevent any potential massive outbreak of the variant and decrease the risk of transmission.
Director-general of health Dr Ashley Bloomfield said speeding up the booster rollout was a key part of the country's response to Omicron.
"The shorter interval means more than 82 per cent of vaccinated New Zealanders will be eligible for a booster by the end of February 2022."
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