Influenza B Vaccines: Current Landscape and Novel Development Strategies

Area of Science:

• Virology
• Immunology
• Public Health

Background:

• Influenza B virus (IBV) causes 20-30% of annual flu cases, leading to significant illness and death.
• Current vaccines offer inconsistent protection against IBV, necessitating improved strategies.
• Antigenic drift in IBV strains reduces vaccine effectiveness over time, demanding broader protection.

Purpose of the Study:

• To review current and emerging vaccine technologies for influenza B virus control.
• To evaluate strategies for enhancing IBV vaccine effectiveness and duration of protection.
• To explore the potential for reducing or eliminating the burden of influenza B virus through vaccination.

Main Methods:

• This review critically appraises existing evidence on influenza B virus control strategies.
• Focus is placed on vaccine-based approaches, including conventional and novel technologies.
• Antiviral therapy, surveillance, diagnostics, and public health measures are acknowledged but not the primary focus.

Main Results:

• Variable effectiveness of current seasonal influenza B vaccines is a key concern.
• Emerging vaccine technologies show promise for improved and sustained protection.
• Broad-spectrum strategies are needed to counter antigenic drift in IBV.

Conclusions:

• Next-generation vaccines are crucial for enhanced and sustained protection against influenza B virus.
• Further research and clinical validation are required to achieve the hypothetical goal of IBV elimination.
• Improving IBV vaccine effectiveness is essential for reducing global health impact.