They have a 25 percent chance I think and doctors can test the baby to see if it was passed on
        
             
        
        
        
Answer:
Some ways in which communicable diseases spread are by: physical contact with an infected person, such as through touch (staphylococcus), sexual intercourse (gonorrhea, HIV), fecal/oral transmission (hepatitis A), or droplets (influenza, TB)
If you caught that disease from another person or animal, it is called a communicable disease. These illnesses are usually caused by viruses or bacteria and are passed through the air, through contact with contaminated surfaces, or through contact with bodily fluids. Examples include colds, the flu, or HIV
Explanation:
Yuh im also in health..
based on my knowledge, a communicable disease is any disease that can be spread person to person, like a contagious disease like the flu.
 
        
             
        
        
        
Oh there have been plenty. 
STI's for example including HIV (human Immunodeficiency virus) has definitely boosted the awareness of caution and avoiding risky behaviors in both sexual terms and reducing exposure to bodily fluid via blood in work, or IVDA (intravenous drug abuse) needle sharing. 
Additionally potentially dangerous and very infectious diseases like the Flu have put an emphasis on the very basic disease prevention of washing ones hands, covering your sneezes, wearing face masks during exposure, and getting vaccinated as well. 
And these are merely two examples of how hundreds of disease shaped out infection control protocols and norms.