Have you noticed the price of eggs soaring at your local grocery store? The reputed culprit is an unprecedented outbreak of bird flu in 21 states across the nation. Since December of last year, hundreds of fowl have died after becoming infected with one of three strains of a highly pathogenic avian influenza (HPAI) virus — H5N1, H5N8, and, mostly, the H5N2 strain. In an effort to prevent the illness from spreading, government authorities have slaughtered more than 48 million birds. According to the U.S. Department of Agriculture (USDA), both commercial and backyard egg-laying flocks in 15 states are affected. Migrating waterfowl such as wild geese and ducks carrying the H5 flu strains have been found in another six states, posing a significant risk to domestic poultry in those areas because the virus is highly contagious. So far, it hasn’t proven a direct threat to humans, but it is taxing their...