Here is a good article from StatNews (health news) concerning the avian flu and eggs:
The most effective strategy against bird flu on chicken farms is prevention, writes former FDA Commissioner Scott Gottlieb — and that may include vaccinating chicks.
www.statnews.com
Health Secretary Robert F. Kennedy Jr. has proposed allowing the virus to spread freely through flocks, hoping to pinpoint hens that display natural immunity. Yet this approach is impractical: Hens bred specifically for maximum egg production tend to have inherently fragile immune systems. Worse, permitting unchecked transmission could inadvertently incubate viral mutations, potentially transforming the outbreak into an even more dangerous threat. Most of these farms have hundreds of thousands or millions of chickens, so even when poultry farmers try to isolate one part of an infected flock, the disease will inevitably spread across their entire flock. The virus can spread through contaminated equipment moved between farms, via wild birds, or, in some instances, possibly through airborne dander traveling short distances and contaminating nearby water sources.
The most effective strategy is prevention — ensuring flocks never become infected in the first place and fortifying them against potential exposure. U.S. Secretary of Agriculture Brooke Rollins recently unveiled a five-part strategy designed to curb avian flu transmission among domestic, egg-laying hens. Her comprehensive plan calls for heightened biosecurity measures to protect farms against initial infection and internal spread. It also explores vaccine options for hens, among other measures. Before wild birds resume migrating, the U.S. has time to take additional steps to fortify farm defenses against such threats and boost the supply of eggs available to consumers.