what are the causes for the disease mentioned first in the list above?
It's is spread by coughing and sneezing via close personal contact or direct contact with secretions
Measles
Measles is caused by the measles virus, a single-stranded, negative-sense, enveloped RNA virus of the genus "Morbillivirus" within the family "Paramyxoviridae".

The virus is highly contagious and is spread by coughing and sneezing via close personal contact or direct contact with secretions. Measles is the most contagious transmissible virus known. It remains infective for up to two hours in that airspace or nearby surfaces. Measles is so contagious that if one person has it, 90% of nearby non-immune people will also become infected. Humans are the only natural hosts of the virus, and no other animal reservoirs are known to exist.
hepatitis b is most commonly transmitted via which of the following routes Exposure to infectious blood or body fluids containing blood;  sexual contact, blood transfusions and transfusion with other human blood products, re-use of contaminated needles and syringes, and vertical transmission from mother to child (MTCT) during childbirth. what are the early indications? Many people have no symptoms during the initial infection. In acute infection, some may develop a rapid onset of sickness with vomiting, yellowish skin, tiredness, dark urine and abdominal pain.  It may take 30 to 180 days for symptoms to begin. who discovered the virus? Baruch Blumberg is there a cure? Although none of the available medications can clear the infection, they can stop the virus from replicating, thus minimizing liver damage. can the virus recur in a person once cured? Yes - The virus DNA remains in the body after infection, and in some people, including those that do not have detectable HBsAg, the disease recurs. Although rare, reactivation is seen most often following alcohol or drug use, or in people with impaired immunity are there any boosters taken to prevent it? Yes - The hepatitis B vaccine who can be given this vaccine? Babies, children, pregnant women what is the name of this vaccine? hepatitis B vaccine who developed it? Maurice Hilleman who was he? An American microbiologist who specialized in vaccinology and developed over 40 vaccines any other boosters developed by him? Yes - for measles, mumps, hepatitis A,  chickenpox, meningitis, pneumonia
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Measles [SEP] Cause
Measles is caused by the measles virus, a single-stranded, negative-sense, enveloped RNA virus of the genus "Morbillivirus" within the family "Paramyxoviridae". The virus is highly contagious and is spread by coughing and sneezing via close personal contact or direct contact with secretions. Measles is the most contagious transmissible virus known. It remains infective for up to two hours in that airspace or nearby surfaces. Measles is so contagious that if one person has it, 90% of nearby non-immune people will also become infected. Humans are the only natural hosts of the virus, and no other animal reservoirs are known to exist.