Amazing Fact In Minutes

 What is vaccines? Why is this so useful? How do this function? These are the most common queries that has been developing in the present situation of COVID-19. So lets discuss about it.   What is vaccines?   Vaccines are the preparation of killed or living microorganisms which produce immunity when administered into the body. In simple meaning it's insertion into the body increase the immunity to fight against diseases.   History of vaccination:     About 3000 years ago the first vaccine was developed against the diseases Small pox   developed by Edward Jenner spread in India and Egypt. Edward Jenner observed the milkmaids who   contracted cowpox did not get smallpox lead him to discover the practice of vaccination against smallpox. To understand about vaccination we must understand about antigen and antibody. Antigen:   When the pathogen(diseases causing factor) enters into the human body it releases a toxic chemical to de...

  Infertility is the failure or inability to conceive. It is the failure of having baby in very common sense.   It is very important to give birth to their owns one but there are many reason or factors that causes infertility. a)      Failure to ovulate Failure to ovulate is the major cause of infertility.This is because the pituitary gland fails to produce the Follicle Stimulating Hormone (FSH) which is essential for development of ovarian follicle. b)     Damage to fallopian tubes- In some women, the fallopian tubes may be blocked or narrowed . This interferes with the movement of sperms or eggs and fertilization c)        Damage to uterus In some cases, uterus u=us ybabke ti naubtaub oregbabct. The fertilized zygote doers not get implanted. d)     Antibiotics to sperm In some rare cases, women may produce antibiotics against sperms. These may found in the cervix, uterus and ov...

Infertility is also seen in male. Due to infertility in males, child cannot be born. Male is equally responsible for inability of women to conceive. Some of the common causes of infertility in male. Azoospermia:     It is the absence of sperms in the semen. This may be due to lack of sperm production by testis or blockage of sperm tube. Oligospermia:             It is the low sperm count, density of sperms is less in semen because of which no sperms reach to ova to fertilize. More than 90% males suffer from oligospermia.   Abnormal sperms:            sometimes sperms may be abnormal in shapes as having two heads or no tail which is unable to fertilize the ovum. Autoimmunity:             In some males, the immune system may attack the sperms and reduce the sperm numbers. I mpotence and premature ejaculation-               The i...