Which of the following statement is true about mumps?
Mumps may involve parotid, submandibular salivary gland.
Patient is infectious 7 days before to 7 days after onset of parotid swelling.
Mumps orchitis can lead to atrophy of testis, but does not frequently cause infertility.
Meningoencephalitis may occur before, along with or following the parotitis.
Salivary glands involvement is limited to parotid
The patient is not infectious prior to clinical parotid enlargement
Mumps orchitis frequently leads to infertility
Meningoencephalitis can precede parotitis