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1) The longer a vaccine is frozen, the less effective it is
Independent variable: time the vaccine is frozen
Dependent variable: How well the body reacts to longer frozen vaccines vs newer ones
Control variable: The Johnson and Johnson, Pfizer, and Moderna vaccine results are separate

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1) Moderna is more effective in older people.
2) Independent Variable: Different ages
3) Control Variable: Exercise, Smoking habits, Moderna vaccine, diet.
4) Antibody production increased by an average of 64% in ages from 50-70 as opposed to the 32% in ages 20-49.
5) In conclusion, the Moderna vaccine is more effective with the higher age range with antibody production 32% higher in older people.

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1. The Pfizer vaccine is the most effective vaccine for people 16 and older to produce new antibodies.
2. independent variable: people of different ages; dependent variable: efficacy of the Pfizer vaccine
3. control variable: Moderna and Johnson & Johnson vaccine instead of the Pfizer vaccine, exercise, climate
4. Tested on 1000 people that were 16 and older. Antibody production for those who took the Pfizer vaccine increased by 80%, whereas for Moderna and Johnson & Johnson vaccine antibody production were about 20-30%.
5. In conclusion, the Pfizer vaccine is the most effective vaccine for people 16 and older to produce new antibodies, with a 60% higher efficacy compared to Moderna and Johnson & Johnson vaccines.

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1) Two shot vaccines are more effective than one shot vaccines.

2)  independent variables: vaccine type (one vs two shot)

dependent variables: how well the vaccine works

3) control variable: health/age of the test subject

4) Two shot vaccines have been shown to be over 85% more effective than one shot vaccines. It has also been proven that two shot vaccines better prepare the body for possible illness.

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1.  Two-shot vaccines last significantly longer than One-shot vaccines
2. Independent variable:  Type of Vaccine
Dependent Variable: Time immunity lasts for each type
3. Control Variable: Somebody who doesn't get a vaccine at all
4.  2500 test subjects were used, 1000 for two shot, 1000 for one shot, and 500 for control group.  All were around young adult age with generally the same health.  It turns out that after decades of research (;-;) that every subject that was vaccinated with only 1 vaccine, the general immunity lasted on average for 23.6 years, while those who took 2 vaccines, their general immunity lasted over 300% longer for certain subjects!
5. Therefore, Two shot vaccines has a significant change from One shot vaccines and has a large immunity change than one shot.

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1.) Pfizer vaccine is more effective compared to Johnson and Johnson vaccine.
2.) Independent variable: Johnson and Johnson/ Pfizer
Dependent variable: the effectiveness of both vaccines
3.) Controlled Variable: the time when volunteers get their shots, the amount of vaccine injected, the age of volunteers, a total of 100 volunteers
4.) A total of 100 volunteers were injected with Pfizer and another 100 volunteers were injected with Johnson and Johson. Of the 100 people who got the Pfizer vaccine, 95 of them didn't have any symptoms when they were exposed to the COVID-19 virus. With the other 100 people who got the Pfizer, 65 of them didn't have any symptoms. Based on the experiments and researches, it is proven the Pfizer vaccine is 95% effective, meaning it is 95% effective in preventing COVID cases with symptoms, whereas Johnson and Johnson vaccine is proven to be 66% effective in preventing COVID symptoms

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Autoimmune disease could be a possible link to drastic, negative reactions after the vaccine has been injected.

1. Independent Variable: One's health issues
2. Dependent Variable: Reaction to the vaccine
3. Control variable: Spot where Vaccine is injected and flows through body, time frame which your vaccine was injected, temperature, weather, health effects, medication currency, age, race

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1. One shot vaccines are more efficient and effective than vaccines that take two shots
2. Independent variable: type of vaccine     Dependent variable: efficacy of vaccine, how well vaccine works
3. Control variable: dosage of vaccine, health/age of subjects
4. 1)Prepare two test subjects and two different types of vaccines.
2)administer both kinds of vaccines to test subjects.
3) administer second shot of two shot vaccine later to subject.
4) measure how effective and how well each of the vaccines worked, as well as which vaccine was superior,
5) Repeat steps 1-4 for trials 1-3.
6) Record data.
7) It turns out after months and months of research, it is found that the efficacy rate of the one-shot vaccine is higher than that of the two-shot vaccine. Additionally, it was found that the immunity of the two shot vaccine was around 31.7 years, while the immunity of the one shot vaccine was almost double that, at around 60.2 years.
5. Therefore, the one shot vaccine is more effective and has a longer amount of immunity than the two shot vaccine.

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1) Why aren't all vaccines 100% effective.

2) Independent variable: Individual immune systems.
Dependent variable: efficacy.

3) Control variables: Somebody who doesn't accept any kinds of vaccines.

4) Vaccines are designed to generate an immune system to protect individuals from future disease. According to data, 95% of people who recived the vaccine was equally effectively across all genders and age.

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1. different vaccines have different affect on young people (teenagers)
2. independent: different vaccines
dependent: effects on teenagers
3. teenagers who do not take vaccine shots
4. randomly chose 1000 teenagers who took covid vaccine shots or adenovirus vaccine shots. Turned out that 236 teenagers who had running nose after taking the covid vaccine and 476 teenagers who had running nose after taking the adenovirus vaccine shots. The rest did not have any symptoms after vaccinated.
5. the teenagers were more effected by adenovirus vaccines than covid vaccines.