Why is a second blood test necessary three months after a person thinks he or she has been exposed to HIV?
(1 point)
• It can take three months for the blood test to be read and a diagnosis made.
• It can take three months for antibodies to the virus to show up in an infected person's blood
• It can take three months for immunity to the virus to show up in an infected person's blood
• It can take three months for the virus to grow in the lab so a diagnosis can be made.