世界衛生組織官員周三表示,已出現猴痘“突破性”感染病例,并確認猴痘疫苗并不是許多人所希望的“靈丹妙藥”。
世衛組織猴痘技術主管羅莎蒙德·劉易斯博士在新聞發布會上表示,突破性感染病例“向我們提供了重要信息,證明疫苗并非在任何情況下都是100%有效的。”
劉易斯表示,突破性感染者是在接種疫苗后接觸高風險者,或者在接觸高風險者之后接種疫苗來防止感染。
劉易斯稱,最常用于預防猴痘的疫苗是天花疫苗Jynneos。雖然與該疫苗有關的數據很少,但上世紀80年代從研究中取得的有限數據表明,天花疫苗對猴痘的防御力只有約85%。目前沒有特別針對猴痘的疫苗。
劉易斯表示:“我們從最開始就很清楚,疫苗并非靈丹妙藥,人們對它的所有期待將會落空。”
她補充說,如果人們感覺面臨高風險,并且希望降低風險,可以減少性伴侶的數量,避免群體和/或隨意性行為。
世衛組織官員周三表示,自1月以來,全球共報告猴痘病例超過35,000例。已經有12例死亡病例。據美國疾病預防控制中心統計,美國已報告的病例超過13,500例。
世衛組織官員表示,上周,全球共報告近7,500例猴痘病例,較前一周增加了20%,而前一周的報告病例數也比更早一周增加了20%。歐洲和美洲報告的所有病例幾乎都是男男性行為者。
本月早些時候,美國食品藥品管理局(U.S. Food and Drug Administration)宣布將允許醫療保健提供商向患者少量施打正常劑量的Jynneos疫苗,以緩解疫苗供應不足的壓力。
專家表示,目前,該疫苗的施打方式是皮間注射而不是皮下注射,皮間注射能夠改善疫苗的效果,從而使減量施打可以接受。
美國食品藥品管理局局長羅伯特·卡利夫博士在8月9日的新聞稿中表示:“最近幾周,猴痘病毒持續傳播,顯然我們目前的疫苗供應無法滿足當前的需求。增加可用劑量,可以讓希望通過接種疫苗預防猴痘的人們有機會接種疫苗。”
新聞稿稱,之所以授權這種非傳統的施打方法,是因為目前在全球傳播的病原體“有極大的可能影響國家安全,或生活在海外的美國公民的健康和安全。”
當時并不確定減量施打皮間注射疫苗是否會增加出現突破性病例的風險,但專家們表示,以這種方式減量施打疫苗,可能比以傳統方式全劑量施打疫苗更有效。(財富中文網)
翻譯:劉進龍
審校:汪皓
世界衛生組織官員周三表示,已出現猴痘“突破性”感染病例,并確認猴痘疫苗并不是許多人所希望的“靈丹妙藥”。
世衛組織猴痘技術主管羅莎蒙德·劉易斯博士在新聞發布會上表示,突破性感染病例“向我們提供了重要信息,證明疫苗并非在任何情況下都是100%有效的。”
劉易斯表示,突破性感染者是在接種疫苗后接觸高風險者,或者在接觸高風險者之后接種疫苗來防止感染。
劉易斯稱,最常用于預防猴痘的疫苗是天花疫苗Jynneos。雖然與該疫苗有關的數據很少,但上世紀80年代從研究中取得的有限數據表明,天花疫苗對猴痘的防御力只有約85%。目前沒有特別針對猴痘的疫苗。
劉易斯表示:“我們從最開始就很清楚,疫苗并非靈丹妙藥,人們對它的所有期待將會落空。”
她補充說,如果人們感覺面臨高風險,并且希望降低風險,可以減少性伴侶的數量,避免群體和/或隨意性行為。
世衛組織官員周三表示,自1月以來,全球共報告猴痘病例超過35,000例。已經有12例死亡病例。據美國疾病預防控制中心統計,美國已報告的病例超過13,500例。
世衛組織官員表示,上周,全球共報告近7,500例猴痘病例,較前一周增加了20%,而前一周的報告病例數也比更早一周增加了20%。歐洲和美洲報告的所有病例幾乎都是男男性行為者。
本月早些時候,美國食品藥品管理局(U.S. Food and Drug Administration)宣布將允許醫療保健提供商向患者少量施打正常劑量的Jynneos疫苗,以緩解疫苗供應不足的壓力。
專家表示,目前,該疫苗的施打方式是皮間注射而不是皮下注射,皮間注射能夠改善疫苗的效果,從而使減量施打可以接受。
美國食品藥品管理局局長羅伯特·卡利夫博士在8月9日的新聞稿中表示:“最近幾周,猴痘病毒持續傳播,顯然我們目前的疫苗供應無法滿足當前的需求。增加可用劑量,可以讓希望通過接種疫苗預防猴痘的人們有機會接種疫苗。”
新聞稿稱,之所以授權這種非傳統的施打方法,是因為目前在全球傳播的病原體“有極大的可能影響國家安全,或生活在海外的美國公民的健康和安全。”
當時并不確定減量施打皮間注射疫苗是否會增加出現突破性病例的風險,但專家們表示,以這種方式減量施打疫苗,可能比以傳統方式全劑量施打疫苗更有效。(財富中文網)
翻譯:劉進龍
審校:汪皓
“Breakthrough” cases of monkeypox are being reported, World Health Organization officials said Wednesday—confirming that the vaccine used to fight it isn’t the “silver bullet” many had hoped for.
Such cases provide “important information that tells us the vaccine is not 100% effective in any given circumstance,” Dr. Rosamund Lewis, the WHO’s technical lead on monkeypox, said at a press conference.
Breakthrough infections have occurred when the vaccine was given before exposure to high-risk individuals, as well as when it was given after exposure in hopes of preventing infection, Lewis said.
While data on the vaccine most commonly used against monkeypox, smallpox vaccine Jynneos, is sparse, limited data from studies in the 1980s suggested that smallpox vaccines are only about 85% effective against monkeypox, Lewis said. There is no vaccine available specifically for monkeypox.
“We have known from the beginning this vaccine will not be a silver bullet and meet all the expectations put on it,” Lewis said.
Those who feel they’re at heightened risk and wish to lower that risk level can reduce their number of sex partners and avoid group and/or casual sex, she added.
More than 35,000 cases of monkeypox had been reported globally since January, WHO officials said Wednesday. There had been 12 deaths. Reported U.S. cases were at just over 13,500, according to the U.S. Centers for Disease Control and Prevention.
Globally, nearly 7,500 cases were reported last week—a 20% increase over the previous week, which was a 20% increase over the week before, according to WHO officials. Almost all cases are being reported in Europe and the Americas among men who have sex with men.
Earlier this month the U.S. Food and Drug Administration announced it would allow health care providers to administer a fraction of the normal dose of Jynneos to patients in a bid to stretch limited vaccine supply.
The vaccine is now to be administered between layers of skin versus under the skin, a technique that improves effectiveness, making a smaller dose acceptable, experts say.
“In recent weeks the monkeypox virus has continued to spread at a rate that has made it clear our current vaccine supply will not meet the current demand,” FDA Commissioner Dr. Robert Califf said in an Aug. 9 news release. “By increasing the number of available doses, more individuals who want to be vaccinated against monkeypox will now have the opportunity to do so.”
The authorization of a nontraditional route of administration was issued because the now globally circulating pathogen “has a significant potential to affect national security or the health and security of United States citizens living abroad,” according to the release.
It was not immediately clear if the administration of smaller doses of vaccine between layers of skin would increase the risk of breakthrough cases, though experts say reduced doses delivered in such a manner could be more effective than whole doses delivered in the traditional manner.