If you are involved in storing vaccines in Australia, you will eventually run into a document called Strive for Five.

Its full title is National Vaccine Storage Guidelines: Strive for 5. It is published by the Australian Government and sets out the rules and expectations for vaccine storage, including how vaccine temperatures should be monitored, recorded and reviewed.

For an international reader, the basic idea is simple enough. Australia has a national vaccine storage guide, and Strive for Five is that guide. The “five” refers to 5°C, which is the target temperature for storing most refrigerated vaccines. The acceptable range is generally +2°C to +8°C.

This article is not a full review of the document. It is also not an endorsement of every part of it. Strive for Five has been around for a long time, and parts of it reflect older ways of working. Temperature monitoring technology has changed significantly, and the guideline has not always kept pace with what modern systems can do.

That said, it remains the reference document used across Australia. If you are trying to understand what it actually requires for temperature monitoring, this is the short version.

The required temperature range

For most refrigerated vaccines, Strive for Five requires storage between:

+2°C and +8°C

The target temperature is 5°C.

That does not mean the refrigerator must sit at exactly 5°C all day. Fridges cycle. Doors open. Temperatures move. The point is that vaccine storage should be managed so that temperatures remain within the +2°C to +8°C range.

If the temperature falls below +2°C or rises above +8°C, this may be a cold chain breach and needs to be investigated.

You need a purpose-built vaccine refrigerator

Strive for Five expects vaccines to be stored in a purpose-built vaccine refrigerator.

This is different from a domestic household fridge. Domestic fridges are not designed to hold a tight and stable temperature range for vaccine storage. They often have cold spots, warm spots and poor temperature recovery after the door has been opened.

The guideline’s expectation is that vaccine stock is kept in a refrigerator designed specifically for vaccine storage, with appropriate air circulation, stable temperature control and suitable monitoring.

You need to check the temperature twice a day

One of the most basic requirements is manual temperature checking.

Strive for Five requires the vaccine refrigerator temperature to be checked and recorded at least twice each day. This should include:

Current temperature Minimum temperature Maximum temperature Date and time Name or initials of the person checking Any action taken if there is a problem

These checks should be done before the refrigerator door is opened. That matters because opening the door can change the temperature reading and give a less useful result.

After recording the minimum and maximum temperatures, the thermometer should be reset so it starts a new monitoring period.

This requirement applies even if the practice, clinic, pharmacy or hospital uses a data logger or an automated monitoring system.

You need a minimum/maximum thermometer

A vaccine refrigerator needs a digital minimum/maximum thermometer.

This device shows three important readings:

The current temperature The lowest temperature since the last reset The highest temperature since the last reset

This is the device staff usually check during the twice-daily manual temperature recording.

The purpose is to provide a quick view of what has happened since the last check. If the maximum temperature is 9°C, or the minimum temperature is 1°C, staff know there may have been an excursion even if the fridge is sitting at 5°C when they look at it.

You need a data logger or automated monitoring system

Manual temperature checks are not enough on their own.

Strive for Five also requires continuous temperature monitoring using a data logger or automated monitoring system.

The logger or monitoring system must record temperatures at least every 5 minutes.

This is an important requirement. A system that only records every 15, 30 or 60 minutes may not meet the guideline. The document specifically expects frequent monitoring so that temperature changes can be identified and investigated.

The data logger should be able to show the temperature history of the refrigerator. This is useful when checking what happened overnight, over a weekend, during a power outage or during a suspected breach.

The logger does not remove the need for manual records

This is one of the more frustrating parts of the guideline for sites that already have modern automated monitoring.

Under Strive for Five, the presence of a data logger or remote monitoring system does not remove the requirement for twice-daily manual checks.

In other words, both are expected:

Manual twice-daily min/max temperature recording Continuous 5-minute data logging or automated monitoring

The manual record gives a routine daily check. The logger gives the detailed temperature history. Whether this duplication is still the best approach with modern monitoring systems is a separate discussion, but as a summary of the document’s requirements, both are part of the expectation.

The logger data needs to be reviewed

It is not enough to own a data logger.

The data needs to be reviewed regularly. Strive for Five expects the logger data or automated monitoring reports to be checked at least weekly.

The purpose of this review is to identify problems that may not be obvious from manual checks alone, such as:

Overnight temperature fluctuations Weekend excursions Repeated door-opening problems Slowly rising average temperatures Cold spots inside the refrigerator Poor temperature recovery after stock loading Temperature instability after maintenance or relocation

The weekly review should be documented. If a problem is found, the action taken should also be recorded.

The logger should be placed where the vaccines are stored

The monitoring device should reflect the temperature of the vaccine storage area.

It should not be placed in a random location simply because that is where it is easiest to see, mount or plug in. It should be positioned where it gives useful information about the temperature experienced by the vaccines.

In practice, this usually means placing the sensor or logger in the main vaccine storage area, away from direct contact with fridge walls, vents or cooling plates unless those areas are specifically being assessed.

Poor logger placement can create a false sense of security. A fridge may appear to be within range at the sensor while vaccines elsewhere in the fridge are too warm or too cold.

Alarms are expected

A data logger or automated monitoring system should be able to alert staff when temperatures move outside the +2°C to +8°C range.

For a basic logger, this may be a local alarm. For a more advanced system, it may be an email, app notification, phone notification or dashboard alert.

The guideline’s concern is not simply whether the system can create an alarm. Staff also need to know what to do when an alarm occurs.

A useful alarm process should make clear:

Who responds to the alarm What immediate action is required Where the cold chain procedure is located How to isolate affected vaccines Who needs to be notified How the event is documented When vaccines can be returned to use or must be discarded

An alarm that nobody responds to is not a control measure. It is just noise.

Excursions need to be investigated

If the refrigerator temperature goes outside the +2°C to +8°C range, this may be a cold chain breach.

The usual first step is to isolate the affected vaccines and label them clearly so they are not used. They should usually remain stored between +2°C and +8°C while advice is sought, unless the local procedure says otherwise.

The logger data should then be reviewed to understand:

How warm or cold the refrigerator became How long the excursion lasted Which vaccines were affected Whether the vaccines may have been exposed to freezing Whether similar events have happened before

In Australia, advice is usually sought through the relevant state or territory health department or immunisation authority. In other countries, the equivalent body may be a public health unit, national immunisation program, pharmacy department, vaccine supplier or regulator.

The important point is that vaccines exposed to a possible breach should not simply be used as normal until the event has been assessed.

Records need to be kept

Strive for Five places a strong emphasis on documentation.

Temperature records should be kept so that a site can demonstrate how vaccines were stored over time. This includes manual temperature logs, logger downloads or automated reports, breach records, maintenance records and actions taken after alarms or excursions.

The exact retention period may depend on the organisation and jurisdiction, but the principle is that records need to be available for review.

From a practical point of view, this documentation is what allows a clinic, pharmacy or hospital to answer a basic but important question:

Were these vaccines stored correctly?

Without records, the answer is often impossible to prove.

New or repaired fridges need to be monitored before use

A vaccine refrigerator should not be loaded with vaccines immediately after installation, repair or relocation.

The refrigerator needs to be monitored first to confirm that it can maintain the correct temperature range.

This also applies after events that may affect performance, such as:

Power failure Equipment repair Major maintenance Relocation of the fridge Repeated temperature alarms Suspected refrigerator fault

The aim is to make sure the refrigerator is stable before vaccine stock is placed at risk.

Transport also needs temperature monitoring

Strive for Five does not only apply to refrigerators sitting in clinics and hospitals. It also covers vaccine transport.

When vaccines are moved, the cold chain still needs to be maintained. This may involve coolers, conditioned ice packs, insulating material and portable temperature monitoring.

A portable minimum/maximum thermometer is commonly used for transport and emergency situations.

The same general principle applies: vaccines should be kept between +2°C and +8°C, and there should be a way to know whether that range has been maintained.

The short version

For temperature monitoring, Strive for Five requires or expects the following:

Vaccines stored between +2°C and +8°C A target storage temperature of 5°C A purpose-built vaccine refrigerator A digital minimum/maximum thermometer Manual temperature checks at least twice daily Recording of current, minimum and maximum temperatures Resetting of the min/max thermometer after each check A data logger or automated monitoring system Temperature recording at least every 5 minutes Weekly review of logger data or reports Alarms or alerts for temperatures outside range Investigation and documentation of possible breaches Appropriate monitoring during transport Records that show what happened and what action was taken

That is the practical core of the document from a temperature monitoring point of view.

Final comment

Strive for Five is not a modern technology manual. It does not fully resolve the tension between manual recording and automated monitoring, and it does not always reflect how current systems can record, alert, report and escalate temperature problems.

But if the question is simply, “What does it require?”, the answer is reasonably clear.

You need to keep vaccines between +2°C and +8°C. You need to check and record the fridge temperature manually at least twice a day. You need continuous 5-minute temperature logging. You need to review the data. You need to respond to alarms and breaches. And you need records that show what happened.

That is the Cliff Notes version of Strive for Five for vaccine temperature monitoring.