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International Conference on Harmonisation<br />

<strong>of</strong> Technical Requirements for Registration <strong>of</strong><br />

Pharmaceuticals for Human Use. Reports are<br />

entered into <strong>the</strong> Adverse Drug Reactions System<br />

(ADRS) database <strong>with</strong>in 48 hours <strong>of</strong> receipt—in<br />

most cases <strong>with</strong>in 24 hours. Causality is assigned<br />

using <strong>the</strong> WHO Uppsala Monitoring Centre (UMC)<br />

causality assessment criteria (WHO UMC 2011).<br />

All individual reports <strong>of</strong> serious AEFIs are reviewed<br />

and entered into <strong>the</strong> database by a medical<br />

<strong>of</strong>ficer. TGA medical <strong>of</strong>ficers also undertake a<br />

weekly review <strong>of</strong> all reports for quality control<br />

and for identifying clusters <strong>of</strong> reports or unusual<br />

reports. AEFIs are reviewed separately from o<strong>the</strong>r<br />

reports. Two-monthly reviews are also undertaken<br />

<strong>of</strong> proportional reporting ratios (PRRs), a statistical<br />

aid to finding signals <strong>with</strong>in <strong>the</strong> ADRS database.<br />

An acknowledgement is sent to each person<br />

reporting an AEFI. Fur<strong>the</strong>r information may<br />

be sought from <strong>the</strong> reporter to assist in <strong>the</strong><br />

assessment <strong>of</strong> <strong>the</strong> event. Fur<strong>the</strong>r information is<br />

routinely requested for <strong>adverse</strong> events <strong>of</strong> special<br />

interest (AESIs) involving vaccines, using clinical<br />

follow-up templates.<br />

TGA staff may request advice about AEFIs from<br />

<strong>the</strong> TGA’s Advisory Committee on <strong>the</strong> Safety <strong>of</strong><br />

Medicines (ACSOM). If potential safety signals<br />

are identified, <strong>the</strong> TGA may also convene an<br />

ad-hoc expert advisory committee to augment<br />

its in-house and statutory committee expertise<br />

and enable TGA to rapidly undertake focused<br />

assessment <strong>of</strong> emerging safety signals. The<br />

TGA can also obtain expert advice from<br />

<strong>the</strong> Australian Technical Advisory Group on<br />

Immunisation (ATAGI) and utilise <strong>the</strong> expertise <strong>of</strong><br />

<strong>the</strong> National Centre for Immunisation Research<br />

and Surveillance (NCIRS) to assist in undertaking<br />

fur<strong>the</strong>r investigation <strong>of</strong> safety signals.<br />

TGA may place additional post-marketing safety<br />

monitoring requirements on vaccine sponsors<br />

through <strong>the</strong> risk <strong>management</strong> plans (RMPs),<br />

required since 2009 as part <strong>of</strong> <strong>the</strong> registration<br />

process for new vaccines or vaccines <strong>with</strong><br />

changed indications. These plans may include<br />

requirements for undertaking active surveillance<br />

or o<strong>the</strong>r specific post-marketing research<br />

studies. An example is <strong>the</strong> requirement for CSL<br />

to undertake active surveillance for Guillain Barré<br />

Syndrome (GBS) following Panvax vaccination.<br />

A hospital-based sentinel surveillance program<br />

(<strong>the</strong> Paediatric Active Enhanced Disease<br />

Surveillance, or PAEDS, program) is also in<br />

place in Australia. The program is modelled<br />

on <strong>the</strong> Canadian IMPACT (see 3.4 International<br />

post-market surveillance and monitoring <strong>of</strong><br />

vaccines) and is coordinated through <strong>the</strong> NCIRS<br />

in collaboration <strong>with</strong> <strong>the</strong> Australian Paediatric<br />

Surveillance Unit (APSU). The program currently<br />

collects data from tertiary paediatric hospitals<br />

in four jurisdictions (New South Wales, South<br />

Australia, Victoria, and Western Australia). AEFIs<br />

currently under active surveillance through<br />

this program include intussusception, varicella<br />

(vaccine failures) and acute flaccid paralysis.<br />

De-identified AEFI data are routinely released to<br />

<strong>the</strong> NCIRS which undertakes a range <strong>of</strong> analyses.<br />

NCIRS collaborates <strong>with</strong> <strong>the</strong> TGA to prepare annual<br />

national surveillance reports, which have been<br />

published in Communicable Diseases Intelligence<br />

(CDI) since 2003. The TGA publishes specific<br />

safety information on <strong>the</strong> Alerts and Advisories<br />

section <strong>of</strong> <strong>the</strong> TGA website. Such information can<br />

be reports on <strong>the</strong> post-marketing surveillance<br />

experience <strong>with</strong> new vaccines—recent examples<br />

include human papillomavirus (HPV) vaccine and<br />

<strong>the</strong> pandemic H1N1 vaccine—or advice about a<br />

specific issue such as <strong>the</strong> identification <strong>of</strong> porcine<br />

circovirus (PCV) in rotavirus vaccines.<br />

Regulatory action that TGA may take if a safety<br />

problem is identified can include requiring<br />

amendments to <strong>the</strong> product information or<br />

inclusion <strong>of</strong> black box warnings, restricting <strong>the</strong><br />

use <strong>of</strong> vaccine to specific group, suspending <strong>the</strong><br />

supply <strong>of</strong> <strong>the</strong> vaccine or <strong>with</strong>drawing <strong>the</strong> product<br />

from <strong>the</strong> market.<br />

8<br />

<strong>Review</strong> <strong>of</strong> <strong>the</strong> <strong>management</strong> <strong>of</strong> <strong>adverse</strong> events <strong>associated</strong> <strong>with</strong> Panvax and Fluvax

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