1876: Alexander Graham Bell invents the telephone, for which he receives two patents. With two financial backers founds the company that becomes AT&T. 1877: The Bell Telephone Company, the first predecessor company to AT&T, is formed and issues stock to the seven original shareowners.
Viral Hepatitis is considered to be contagious between people. Generally the infectious agent may be transmitted by saliva, air, cough, fecal-oral route, surfaces, blood, needles, blood transfusions, sexual contact, mother to fetus, etc. Viral Hepatitis, although infectious, is not a genetic disease.It is not caused by a defective or abnormal gene. The contagious disease, Viral Hepatitis, can be transmitted: 1  by sexual conduct between people. 2  from person to person by blood. 3  from the mother to her fetus.4  from person to person by saliva, air, coughing, contact, surfaces, fecal-oral route, etc.he contagious disease, Viral Hepatitis, can be transmitted: 1  by sexual conduct between people. 2  from person to person by blood. 3  from the mother to her fetus. 4  from person to person by saliva, air, coughing, contact, surfaces, fecal-oral route, etc.
Some people with hepatitis B or C may also become lifelong carriers of these viruses and can spread them to other people. 1  For hepatitis A, the incubation period is 2 to 6 weeks. 2  For hepatitis B, the incubation period is between 4 and 20 weeks.3  For hepatitis C, it's estimated that the incubation period is 2 to 26 weeks. person is contagious during the hepatitis D incubation period. Someone who is infected with hepatitis D begins to be contagious early in the incubation period. The point at â¦ which a person is thought to be most contagious is right before symptoms begin.