@senawey_.edit: يتقدر علشان تعبت فيه❤️#team_fav🏹🦅 #viral @Ahmed Embabi | أحمد مبابي @Zeyad Khaled “ Zezo “ #متابعه #عصام الحضري #عمرو_دياب

𝙁𝘼𝙑 𝘿𝘼𝙍𝙆 🔥
𝙁𝘼𝙑 𝘿𝘼𝙍𝙆 🔥
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Region: EG
Sunday 02 August 2026 03:03:18 GMT
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ahmedamrembabi
Ahmed Embabi | أحمد مبابي :
جميل يا صديقي ❤️استمر و بالتوفيق ❤️
2026-08-03 10:34:41
19
abdallah591q
Abdalla Ramadan :
خلي بالك مع الوقت مصطفى هيعدي الحضري بس فاضل تكه بس عليه و كام اختبار حقيقي وتاثير في بطولة بطولتين ٣ هيجيب الحضري
2026-08-02 22:34:07
2
hamza.zaghloul84
Hamza zaghloul :
جامد اوي😂❤
2026-08-04 17:31:23
0
abdallah591q
Abdalla Ramadan :
انت لو جالك ٣ ٤ زي هيثم حسن شكرا بس في مراكز مختلفة دا غير حمزة عبد الكريم لا مستقبلك حلو و ياهل تاخد كذا كأس امم دنتا عذبت الارجنتين على بال مكسبوك
2026-08-02 22:39:53
1
mohamedredanassar
موكشا :
😁😁😁
2026-08-10 08:41:41
0
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“Double-blind placebo-controlled” trials are often called the gold standard of research—but in vaccine science, the reality is more nuanced. For a brand-new vaccine, placebo-controlled trials are often used before approval to determine whether the vaccine prevents disease and to evaluate safety. However, once an effective vaccine already exists, continuing to withhold protection from participants may be unethical. Imagine designing a study today where half of children receive no measles vaccine during an active outbreak. Even if the study produced cleaner data, exposing participants to a preventable serious illness would violate fundamental research ethics. That’s why many vaccine studies after initial approval use: ✅ Active comparators (comparing a new vaccine to an existing vaccine) ✅ Large population-based studies ✅ Post-marketing safety surveillance involving millions of people ✅ Case-control and cohort studies These study designs may not be double-blind placebo-controlled, but they often provide information that randomized trials cannot—especially for detecting very rare side effects or evaluating real-world effectiveness. Good science isn’t about worshipping a single study design. It’s about using the most ethical and appropriate methods to answer a question while protecting human participants. The strongest conclusions come from the totality of evidence, not from any one study type alone. #evidencebasedmedicine #vaccineswork #scienceliteracy #publichealth #pediatrics
“Double-blind placebo-controlled” trials are often called the gold standard of research—but in vaccine science, the reality is more nuanced. For a brand-new vaccine, placebo-controlled trials are often used before approval to determine whether the vaccine prevents disease and to evaluate safety. However, once an effective vaccine already exists, continuing to withhold protection from participants may be unethical. Imagine designing a study today where half of children receive no measles vaccine during an active outbreak. Even if the study produced cleaner data, exposing participants to a preventable serious illness would violate fundamental research ethics. That’s why many vaccine studies after initial approval use: ✅ Active comparators (comparing a new vaccine to an existing vaccine) ✅ Large population-based studies ✅ Post-marketing safety surveillance involving millions of people ✅ Case-control and cohort studies These study designs may not be double-blind placebo-controlled, but they often provide information that randomized trials cannot—especially for detecting very rare side effects or evaluating real-world effectiveness. Good science isn’t about worshipping a single study design. It’s about using the most ethical and appropriate methods to answer a question while protecting human participants. The strongest conclusions come from the totality of evidence, not from any one study type alone. #evidencebasedmedicine #vaccineswork #scienceliteracy #publichealth #pediatrics

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