{"id":90,"date":"2021-09-20T13:48:55","date_gmt":"2021-09-20T17:48:55","guid":{"rendered":"https:\/\/www.vdh.virginia.gov\/animal-contact-human-health\/?page_id=90"},"modified":"2023-09-28T10:52:10","modified_gmt":"2023-09-28T14:52:10","slug":"non-human-primates","status":"publish","type":"page","link":"https:\/\/www.vdh.virginia.gov\/animal-contact-human-health\/non-human-primates\/","title":{"rendered":"Non-Human Primates"},"content":{"rendered":"
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\"\"Due to the close genetic relationship between nonhuman primates and humans, disease causing organisms are easily exchanged between them.\u00a0 The pathogens that can be passed from nonhuman primates to humans and vice versa include bacteria, fungi, parasites, and viruses.\u00a0 They may be spread by bites, scratches, handling animals or their tissues, airborne transmission of aerosols and droplets, ingestion, and arthropod vectors.\u00a0 Often the nonhuman primate carries and transmits disease without any visible signs.\u00a0 Persons in contact with these animals must always be aware of the potential risks involved.\u00a0 This is especially true when animals are under stress, such as those that have been recently shipped or introduced into a new situation, or have developed a recent illness.\u00a0 As with many communicable diseases, immunocompromised persons are at greatest risk for infection or serious consequences from such infections.<\/p>\n

Nonhuman primates can be divided into several groups; old world monkeys, new world monkeys and others (see\u00a0Attachment 1<\/a>\u00a0for some scientific and common names).\u00a0 These groupings have significance when it comes to the kinds of diseases they can contract and transmit.\u00a0 For instance, one of the most serious diseases that humans can get from monkeys is caused by Herpesvirus simiae<\/em> virus (B virus, Cercopithecine herpesvirus 1) that is enzootic among old world monkeys of the genus Macaca <\/em>(macaques).\u00a0 Fortunately, most pet monkeys in this country are new world species and are bred in this country.\u00a0 Federal regulations prohibit importation of primates except for scientific, educational, and exhibition purposes.\u00a0 Importers must be registered with the Centers for Disease Control and Prevention and must hold a special permit to import cynomolgus, rhesus or African green monkeys. Unfortunately, animals may sometimes be smuggled into the country or \"adopted\" from research facilities.<\/p>\n

SELECTED ZOONOTIC DISEASES OF INTEREST (more in Attachment 2<\/a>)<\/h2>\n

Rabies<\/h3>\n

Nonhuman primate rabies is rarely reported in this country and with one exception has always occurred in animals that were recently imported from rabies endemic areas.\u00a0 The one exception occurred after a dog bit a pet monkey in 1911 during a dog rabies epidemic in Florida. Free ranging, macaque monkeys that have been introduced into Florida's Ocala Springs area, where raccoon rabies is endemic, have never been diagnosed with rabies.\u00a0 Between 1957 (the beginning of the raccoon rabies outbreak in Florida) and 1974 more than 640 nonhuman primates were tested for rabies in Florida.<\/p>\n

B Virus (Cercopithecine herpesvirus 1<\/em>)<\/h3>\n

Up to 90% of adult macaques can be carriers of B-virus; most are asymptomatic, but some can have localized oral lesions.\u00a0 In humans the infection presents as a rapidly ascending encephalomyelitis with a fatality rate of about 70%.\u00a0 Most of the 25 well-documented cases of human infection have occurred in laboratory animal handlers who were somehow directly inoculated with tissue or fluid from a monkey via a bite, scratch, needlestick or laboratory injury.\u00a0 Although experimentally infected new world monkeys develop fatal disease and could conceivably become infected by contact with macaques, under most circumstances bites to humans from new world monkeys should not raise concern about this deadly disease because it is not endemic among new world monkeys.\u00a0 The attached article, Recommendations for Prevention of and Therapy for Exposure to B Virus (Cercopithecine Herpesvirus 1)<\/em>(see Attachment 3<\/a>) was published November 15, 2002, in Clinical Infectious Diseases,<\/em> gives details on prevention and treatment following exposure to a macaque.\u00a0 (Visit the CDC ppage on B virus for more info.<\/a>)<\/p>\n

Tuberculosis (TB)<\/h3>\n

Nonhuman primates are very susceptible to infection from mycobacteria tuberculosis (TB) and can contract it from humans or other animals.\u00a0 Primates from environments where human TB is prevalent are at greatest risk for having the disease.\u00a0 During the 31 day quarantine of legally imported primates, a minimum of three tuberculin skin tests are performed and positive animals are destroyed.\u00a0 Illegally imported monkeys and those raised and sold as pets in the US may not be appropriately tested and could be infected.<\/p>\n

Local Wound Infections<\/h3>\n

Approximately 224 strains of bacteria have been identified in human and animal saliva-contaminated wounds.\u00a0 The organisms most often encountered in the mouths of rhesus monkeys are the Neisseria<\/em> species, alpha hemolytic streptococci, and Haemophilus parainfluenza<\/em>.\u00a0 In addition, the attending physician should be notified of the possibility of infection with Eikenella corrodens,<\/em> a facultative anaerobe associated with human and nonhuman primate bites, that cause extensive tissue damage.<\/p>\n

Enteric Diseases<\/h3>\n

These are spread via the fecal oral route and cause similar symptoms in humans and nonhuman primates.\u00a0 The more common agents include bacteria (Shigella, Salmonella, Campylobacter<\/em>), protozoan parasites (Cryptosporidium, Giardia, Amoeba, Balantidia<\/em>), and helminth parasites (Strongyloides<\/em>).<\/p>\n

Simian Immunodeficiency Virus (SIV)<\/h3>\n

SIV is closely related to HIV-1 and HIV-2 (causes of AIDS) and causes an AIDS-like illness in macaque monkeys; it may be asymptomatic in other species.\u00a0 There have been no reports of human illness, but there are research workers who developed antibodies to SIV after handling laboratory specimens.<\/p>\n

Marburg and Ebola (Filoviruses)<\/h3>\n

Humans have developed illness from Marburg infection when exposed to tissues from African Green monkeys.\u00a0 The Ebola viruses from the Sudan and Zaire have not been isolated from monkeys.\u00a0 A different Ebola virus was discovered in 1995 in West Africa chimpanzees when a researcher became infected.\u00a0 The Ebola virus that caused an outbreak in a Reston, Virginia monkey quarantine facility, did not cause illness in any humans, but four animal handlers developed antibodies to the virus.\u00a0 These incidents remind us of the potential for as yet undiscovered human pathogens to be introduced by wild caught monkeys.<\/p>\n

Other<\/h3>\n

Nonhuman primates are more likely to contract hepatitis A, measles, or poliomyelitis from humans or as part of a laboratory experiment than to transmit these diseases to humans.\u00a0 However, once infected with these diseases, primates pose a risk to the humans with which they are in contact.<\/p>\n

Quick Links<\/h2>\n