Recently CNN.co.jp reported the following:
ミツバチの細菌感染症を防ぐ初のワクチン、米農務省が承認
2023.01.08 Sun posted at 13:00 JST
(CNN) ミツバチの巣を死滅させる細菌感染症、アメリカ腐蛆(ふそ)病を予防する初のワクチンが、米農務省に承認された。
農務省によると、ダラン・アニマル・ヘルスの関連会社、ダイヤモンド・アニマル・ヘルスに対して12月29日、条件付きワクチン免許を交付した。農務省がミツバチ製品に免許を交付したのは同社が初めてだった。
同ワクチンを製造するダラン・アニマル・ヘルスの4日の発表によると、アメリカ腐蛆病についてはこれまで、抗生剤による治療に加え、ハチと感染した巣を焼却処分することが主な対処法とされてきた。
カリフォルニア州養蜂家協会の役員は、「養蜂家にとって素晴らしい一歩だ。抗生剤による治療は効果が限られ、多大な時間と労力を必要とする」「巣の感染を予防できれば高額な治療を避け、ハチの健康を保つための対策に集中できる」とワクチン承認を歓迎した。
ダランによると、ミツバチ用のワクチンは、注射器で注入するのではなく、働きバチの餌に混ぜて投与する。働きバチがワクチンを取り込んだローヤルゼリーを女王バチに食べさせると、ワクチンの断片が女王バチの卵巣に蓄えられ、アメリカ腐蛆病に対して免疫を持つ幼虫が生まれる。
ダランによると、ワクチンは年内に米国で発売する。
Translation
(CNN) The USDA had approved the first vaccine to prevent American foulbrood, a bacterial infection that killed hives.
The USDA issued a conditional vaccine license on December 29 to Diamond Animal Health, an affiliate of Dalan Animal Health. The company was the first to have a bee product licensed by the USDA.
The USDA said in a statement that "We hope this product
offering will help prevent and treat American foulbrood". This
department's website described American foulbrood as "one of the most
widespread and devastating honeybee foulbroods."
According to a statement on the 4th by Dalan Animal Health which made the vaccine, until now, the main treatment for American foulbrood had been to incinerate bees and infected hives together, in addition to treatment with antibiotics.
An official with the California Beekeepers Association welcomed the approval of the vaccine and said that "It's a great step forward for beekeepers and that antibiotic treatment has limited efficacy and requires a lot of time and effort"; and that “If we can prevent hive infection, we can avoid expensive treatments and focus on measures in keeping bees healthy.”
Instead of injecting vaccines for bees with a syringe, Dalan said they would be administered by mixing them into worker bee food. When worker bees fed the queen bee with vaccine-loaded royal jelly, bits of the vaccine would be stored in the queen's ovaries, producing larvae that could be immunized to American foulbrood.
Dalan said the vaccine would be made available in the US within
this year.
So, the
USDA has approved the first vaccine to prevent American foulbrood. Vaccines are
administered by mixing them into worker bee food. It's a great step forward for
the beekeeping industry in the US.
Note:
Dalan Animal Health in its web-site says that their mission
is to provide safe, innovative, and sustainable solutions for beekeepers to
protect their businesses. They develop vaccines and biotherapeutics to improve
the health and productivity of honeybee colonies. (https://www.dalan.com/)
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