Investigation of Impact of Milk Consumption on H5 Influenza Detection in Respiratory Specimens
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 30
- 试验地点
- 1
- 主要终点
- Proportion of respiratory specimens with influenza detected
研究概览
简要总结
The purpose of this study is to determine whether drinking pasteurized milk (milk heated to kill harmful germs) that contains inactive particles of a flu virus called A(H5) could lead to the detection of the virus in the nose or throat. Inactive particles are not capable of causing disease. The results will help the Centers for Disease Control and Prevention (CDC) better understand how milk consumption could affect flu surveillance. Investigators also want to see if the body produces antibodies in response to this milk consumption.
详细描述
Since March 2024, avian influenza A (H5N1) viruses have infected U.S. dairy cattle and spread widely. The virus has been identified in high concentrations in raw milk, and research shows that pasteurization - the process of heating milk to a specific temperature for a set time - inactivates the A (H5N1) virus. Therefore, the Food and Drug Administration (FDA) says that commercial pasteurized milk is safe for consumption. However, trace amounts of inactive influenza particles may still be detected in pasteurized milk.
This study aims to determine whether drinking pasteurized milk could be a possible exposure for H5N1 influenza detection. The findings will support the Centers for Disease Control and Prevention's (CDC) efforts to evaluate milk consumption as a factor in influenza surveillance and provide context for interpreting surveillance data.
Healthy adults will drink 250 mL of pasteurized milk containing the inactive H5N1 virus, provided by the CDC, either during a single visit or over three consecutive daily visits. Nasal and combined nasal/oral swabs will be collected immediately following milk consumption to assess the presence of influenza. Additionally, a subset of participants will provide blood, saliva, and stool samples at the initial visit and again 21-30 days post-consumption.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Sequential
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 64 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Individuals aged 18-64 years
- •BMI ≤ 35 kg/m2
- •Able to understand and give informed consent (American English) and comply with study visits and procedures.
- •In good general health based on medical history and the investigator's clinical judgment.
排除标准
- •Symptoms of acute respiratory illness or conjunctivitis within 7 days
- •Febrile illness in the previous 72 hours
- •Recent influenza antiviral use (within 14 days)
- •Immunosuppression due to illness or medications
- •Current pregnancy or breastfeeding
- •History of allergy or intolerance to milk or milk alternatives
- •Consumption of raw (unpasteurized) milk within the previous 14 days
- •Recent work (within 14 days) on a farm with animals known to be infected with A(H5) virus
- •Previous receipt of A(H5) vaccine at any time
研究组 & 干预措施
1-Day Group
Participants will consume 250 mL of pasteurized commercial milk at a study visit.
干预措施: Pasteurized milk contaminated with killed A(H5) virus (Other)
3-Day Group
Participants will consume 250 mL of pasteurized commercial milk for a total of 3 daily consecutive visits.
干预措施: Pasteurized milk contaminated with killed A(H5) virus (Other)
结局指标
主要结局
Proportion of respiratory specimens with influenza detected
时间窗: Up to 30 days after milk consumption
Proportion of respiratory specimens (nasopharyngeal and combined nasal/oropharyngeal swabs) with detection of influenza after consumption of pasteurized milk contaminated with killed A(H5) virus
次要结局
- Severe adverse events after milk consumption(Up to 30 days after milk consumption)
研究者
Daniel S. Graciaa, MD
Assistant Professor
Emory University