No, hemophilia does not confer an advantage against malaria. People with sickle-cell anemia do have an immunity, of sorts.
Pooled human serum globulin is antibodies (or antitoxins) found in our blood. When administered to a patient after exposure to Hepatitis A it is a type of Artificially acquired passive immunity.
Hepatitis C is an infectious disease that does not confer immunity after exposure. People who have been infected with hepatitis C can get re-infected with the virus.
The suffix of "confer" is -er.
I must confer with my colleagues
Conferred is the past participle of confer.
I'd like to confer with my associates.
The past tense of confer is conferred.
CONFER - software - was created in 1975.
With active immunity, the body has cells that produce antibodies to antigens composed of amino acids. The antigen could be a protein itself, or on a virus or bacteria. Once the body has a cell that can produce antibodies to this antigen, it differentiates into memory cells and plasma cells, which are the factories that produce the antibodies. With passive immunity, just the antibodies are given, such as an injection. Mothers also confer passive immunity to their children through breast milk. IgA (one of the 5 antibody classes) is secreted. This is temporary as it will bind the antigen, but will not induce production of their own protective antibodies.
Jenner's method of using cowpox infection to confer immunity to smallpox was superior to earlier methods because it carried a significantly lowered risk of serious disease. The earlier method of using material from lesions of smallpox victims conferred immunity but at the risk of acquiring the potentially lethal disease.
Viruses that typically confer long-lasting or lifelong immunity after infection include measles, mumps, rubella, chickenpox, and most strains of the influenza virus. However, some viruses, like the common cold or norovirus, can infect a person multiple times due to the presence of different strains or lack of long-lasting immunity.