Group A streptococcal infection, common symptoms include fever, sore throat, and enlarged lymph nodes. Streptococcal bacteria
1 Treatment of strep infection may not prevent inflammation of the kidneys. 2  PANDAS is a term used to describe what happens with some children who have symptoms of certain disorders that get worse following infections such as strep throat or scarlet fever. Sometimes in response to a strep infection, the body's immune system will attack healthy tissues, causing complications such as rheumatic fever, inflammation of the kidneys (glomerulonephritis), or pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS). 1 But some complications may require treatment. 2  Treatment of strep infection may not prevent inflammation of the kidneys. 3  PANDAS is a term used to describe what happens with some children who have symptoms of certain disorders that get worse following infections such as strep throat or scarlet fever. Sometimes in response to a strep infection, the body's immune system will attack healthy tissues, causing complications such as rheumatic fever, inflammation of the kidneys (glomerulonephritis), or pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS). Streptococcal (strep) throat infection is very common. A 10‐day course of penicillin is prescribed mainly to protect against the complication of acute rheumatic fever, which can occur approximately 20 days after streptococcal throat and cause damage to the heart valves. While many sore throats will get better without treatment, some throat infections—including strep throat—may need antibiotic treatment. How You Get Strep Throat. Strep throat is an infection in the throat and tonsils caused by group A Streptococcus bacteria (called group A strep). Group A strep bacteria can also live in a person's nose and throat without causing illness. The bacteria are spread through contact with droplets after an infected person coughs or sneez Strep Throat. Caused by a group A streptococcal infection. Common symptoms include fever, sore throat, and enlarged lymph nodes. Strep throat is a contagious infection, spread through close contact with an infected individual. While many sore throats will get better without treatment, some throat infections—including strep throat—may need antibiotic treatment. How You Get Strep Throat. Strep throat is an infection in the throat and tonsils caused by group A Streptococcus bacteria (called group A strep). Group A strep bacteria can also live in a person's nose and throat without causing illness. The bacteria are spread through contact with droplets after an infected person coughs or sneezes Strep tests are used to determine whether a person with a sore throat (pharyngitis) has strep throat, an infection of the throat and tonsils caused by the bacteria Streptococcus pyogenes, also called group A streptococcus (GAS). Strep throat spreads from person-to-person through contact with respiratory secretions that contain the streptococcal bacteria. During influenza season, the early symptoms of influenza, such as fever, chills, headache, sore throat, and muscle pain, may mimic strep throat. Strep throat is caused by streptococcal (strep) bacteria, most often by group A beta-hemolytic streptococcus (GABS). Other types of strep that can sometimes infect the throat are groups C and G strep bacteria. A strep infection causes the throat (pharynx) and the tonsils or adenoids to become irritated, inflamed, and painful. How the strep infection is spread. Strep throat can be passed from person to person. When a person infected with strep throat breathes, coughs, or sneezes, tiny droplets containing the strep bacteria are released into the air and are breathed in by other people. Streptococcal pharyngitis, streptococcal tonsillitis, or streptococcal sore throat (known colloquially as strep throat) is a type of pharyngitis caused by a group A streptococcal infection. It affects the pharynx including the tonsils and possibly the larynx. Common symptoms include fever, sore throat, and enlarged lymph nodes. It is the cause of 15–40% of sore throats among children and 5–15% in adults. Strep throat is a contagious infection, spread through close contact with an infected individual. A definitive diagnosis is made based on the results of a throat culture Strep throat is the most common throat infection caused by bacteria. It is found most often in children between the ages of 5 and 15, although it can occur in younger children and adults. Children younger than 3 years old can get strep infections, but these usually don’t affect the throat. Rheumatic fever can develop about 18 days after a bout of strep throat and causes heart disease with or without joint pain. It can be followed months later by Sydenham chorea, a disorder in which the muscles of the torso, arms, and legs move involuntarily in a dancing and jerky manner. This common condition is caused by group A streptococcus bacteria. Strep throat can affect children and adults of all ages. However, it is especially common in children between the ages of 5 and 15 (NLM, 2011) . Sneezing and coughing can spread the infection from person-to-person. 
http://www.webmd.com/oral-health/tc/strep-throat-complications-topic-overview http://www.webmd.com/oral-health/tc/strep-throat-complications-topic-overview http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001663/ http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001663/ https://labtestsonline.org/understanding/analytes/strep/tab/test http://www.webmd.com/oral-health/tc/strep-throat-cause https://en.wikipedia.org/wiki/Streptococcal_pharyngitis http://my.clevelandclinic.org/health/diseases_conditions/hic_Group_A_Streptococcal_Infections http://www.healthline.com/health/strep-throat
Which of the following causes strep throat