Let's start from the beginning.
Ultrasounds are a type of radiology equipment. Ultrasounds(sonography) can be used to see images inside of the body, including kidneys, uterus and many other internal organs.
Ultrasounds are commonly used for pregnant individuals.another common use is to ee the brain and hips in infants
There can be many complications in a pregnancy. Ultrasounds can determine the sex of the fetus, see if there are amino bands around the limbs( which can cause limbs to fall off, etc. Most ob/gyns want to keep the pregnant individual calm and healthy as well of the fetus.
Answer:the use of masks are being revisited even though vaccines are now available to all because some people may not like the idea of injecting the virus into their body with all of the side effects and still may be able to get the virus even if they did get the vaccine.
Explanation:The bottom line is that the main reason why people do not want the vaccine and would just keep using masks over and over again,is because of the side effects.
