Yellow fever - An old foe with new developments.

Area of Science:

• Medical Entomology
• Virology
• Public Health

Background:

• Yellow fever is a viral hemorrhagic fever caused by an RNA flavivirus.
• Immunization and vector control are primary strategies for yellow fever control and elimination.

Purpose of the Study:

• To review the impact and importance of yellow fever vaccinations for health practitioners in northern Australia.

Main Methods:

• A narrative review of selected key policies, studies, and medical guidelines was conducted.

Main Results:

• Recent large outbreaks in Africa and South America highlight the risk of international spread.
• Mobile populations are at increased risk; quality assurance for vaccination documentation has improved.
• Fractional yellow fever vaccine dosing offers 1-year protection in outbreaks, warranting further research.

Conclusions:

• Despite Australia being yellow fever-free, introduction is possible via infected travelers due to competent mosquito vectors in northern Australia.
• Health education and vaccination are vital defenses, alongside surveillance and vector control.
• Fractional dosing may be an effective outbreak response strategy.