While all of the strains of HPV may cause condylomata acuminata, 90% of all cases of genital warts are caused by just two strains: 6 and 11. 

There are more than 130 types of herpes viruses. Of those, 8 are known to infect humans. Some of the more common examples are herpes simplex 1 and 2, varicella / zoster, Epstein-Barr virus, and cytomegalovirus. Less common viruses include human herpes virus 6, human herpes virus 7, and Kaposi's sarcoma-associated herpesvirus. Rotavirus is not a herpes virus; rather, it is a double-stranded RNA virus in the Reoviridae family. 

Human papillomavirus has been associated with several forms of cancer, including cancers of the cervix, vulva, anus, and oropharynx. It is also associated with penile and vaginal dysplasias. 

Rhinovirus, a type of picornavirus, is implicated in up to 50-80% of cases of the common cold. Other less common causes include human coronavirus (15% of cases), influenza (10%), and adenovirus (5%). 

The majority of infectious vomiting and diarrhea in infants and young children is viral in origin, with the most commonly implicated virus being rotavirus. Norovirus is  another common cause of viral gastroenteritis in individuals of all ages, though it is not as common in young children as rotavirus. 

In most children and adults, Zika virus causes a mild fever characterized by myalgia, fatigue, and headache. The population most at risk for serious complications from the disease is unborn fetuses. Exposure to Zika virus before birth has been associated with microcephaly, a frequently fatal disorder of abnormal skull and brain development.

Each of these viral families or groups has an RNA genome and envelope. The Paramyxoviruses are structurally the most closely related to influenza, since both are negative sense RNA viruses and many of the paramyxoviruses contain a neuraminidase and hemagglutinin. There are some notable differences, however. In the paramyxoviruses, both neuraminidase and hemagglutinin functions contained in a single glycoprotein on one type of spike, whereas in influenza, these functions are accomplished by two separate glycoproteins which on two types of spikes (except for Influenza C, which has both functions on a single glycoprotein). In addition, the genome is segmented in influenza, but not in the paramyxoviruses. The viruses in the Togaviridae and Coronaviridae families differ from the Influenza viruses in that they have a positive sense RNA genome. Viruses in the Rhabdoviridae family, which includes the vesicular stomatitis virus and the rabies virus, are bacilliform negative-stranded RNA viruses.

Paramyxoviruses possess hemagglutinin and neuraminidase that are present on the same spike. This is in contrast to the orthomyxoviruses that possess hemagglutinin and neuraminidase on different spikes.

The influenza virus is a member of the orthomyxovirus group and is an enveloped ss-RNA virus. Lentiviruses are a group of retroviruses which include HIV-1. Parainfluenza virus and respiratory syncytial virus (RSV) belong to the paramyxovirus group.

Laryngotracheobronchitis, commonly known as croup, is one of the serious manifestation of parainfluenza virus infection in infants and young children. Parainfluenza type 1 is a common cause of croup, which results in subglottal swelling and airway obstruction. Major clinical manifestations include hoarseness, "barking" cough, tachypnea, tachycardia, and suprasternal retraction.

Cold sore is a recurrent mucocutaneous infection caused by herpes simplex virus (HSV). The individual retains HSV-1 DNA in the trigeminal ganglion for life following recovery from primary oropharyngeal HSV infection. Cold sores, also known as herpetic labialis, are manifested as a result of activation of HSV from the trigeminal ganglia. Cold sores are characterized by development of a cluster of vesicles around the mucocutaneous junction of the lips.

Rotaviruses can survive the acidic environment in stomach. The virus infects the small intestine and damages the epithelial cell lining the villi. The virus causes permeability changes and cell lysis, leading to malabsorption with water and electrolyte imbalance. Rotaviruses are a major cause of diarrhea in young children and are associated with outbreaks in preschool and day care-centers. Rotaviruses cause extensive tissue damage, leading to serious fluid and electrolyte loss.

Lassa fever virus is an Arenavirus associated with hemorrhagic fever. Lassa fever virus is enzootic in the West African peridomestic rodent. The rodent transmits the virus to the human by contaminating the house with urine. The infection is characterized by fever, headache, malaise, coagulopathy, petechiae, vomiting, pharyngitis, and occasional visceral hemorrhage. Serious manifestations include carditis, hepatitis, encephalopathy, pneumonitis, conjunctivitis, etc. Cardiovascular collapse results in death in 20% of the hospitalized cases.

Hand, foot, and mouth disease is a vesicular exanthem caused by coxsackievirus A16. It is characterized by ulcerating vesicles on hand, foot, mouth, and tongue along with mild fever. The disease subsides in a few days on its own.