Answer:
FDA approves Pfizer booster shots for people who are 'high risk' or over 65. The US Food and Drug Administration on Wednesday authorized a booster dose of the Pfizer and BioNTech Covd-19 vaccine for those ages 65 and older and some high-risk Americans, paving the way for a quick rollout of the shots.
Explanation:
If it isn’t taken within 72 hours of exposure it simply will not work
Answer:
Virus transmission is affected by a number of factors, including environmental determinants, host behavior, host defense mechanisms, and virus infectivity.
Explanation:
Answer: Steam burns the skin worse than hot water because the heat of vaporization is released as well.
Explanation:
The steam exhibit more energy than water at the same temperature that is 100° C. The steam uses the latent heat of vaporization so as to get vapourize and water do not exhibit energy. This latent heat of energy causes severe burns due to steam as compared to water. Steam burns are caused by the heat of vapors and they form scalds.
