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Aerophobia

The English suffixes -phobia, -phobic, -phobe (of Greek origin) occur in technical usage in psychiatry to construct words that describe irrational, disabling fear as a mental disorder (e.g., agoraphobia) and in biology to descibe organisms that dislike certain conditions (e.g., acidophobia). In common usage they also form words that describe dislike or hatred of a particular thing or subject. more...

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Many people apply the suffix "-phobia" inappropriately to mild or irrational fears with no serious substance; however, earlier senses relate to psychiatry which studies serious phobias which disable a person's life. For more information on the psychiatric side of this, including how psychiatry groups phobias as "agoraphobia", "social phobia", or "simple phobia", see phobia. Treatment for phobias may include desensitization (graduated exposure therapy) or flooding.

The following lists include words ending in -phobia, and include fears that have acquired names. In many cases people have coined these words as neologisms, and only a few of them occur in the medical literature. In many cases, the naming of phobias has become a word game.

Note too that no things, substances, or even concepts exist which someone, somewhere may not fear, sometimes irrationally so. A list of all possible phobias would run into many thousands and it would require a whole book to include them all, certainly more than an encyclopedia would be able to contain. So this article just gives an idea of the kind of phobias which one may encounter, certainly not all.

Most of these terms tack the suffix -phobia onto a Greek word for the object of the fear (some use a combination of a Latin root with the Greek suffix, which many classicists consider linguistically impure).

In some cases (particularly the less medically-oriented usages), a word ending in -phobia may have an antonym ending in -philia - thus: coprophobia / coprophilia, Germanophobia / Germanophilia.

See also the category:Phobias.

Phobia lists

A large number of "-phobia" lists circulate on the Internet, with words collected from indiscriminate sources, often copying each other.

Some regard any attempt to create a list of phobias as an irrational endeavor because, theoretically, a person could become conditioned to have a fear of anything. Also, a significant number of unscrupulous psychiatric websites exist that at the first glance cover a huge number of phobias, but in fact use a standard text (see an example below) to fit any phobia and reuse it for all unusual phobias by merely changing the name. For a couple of striking examples.

"... Poor performance or grades. Promotions that pass you by. moths phobia will likely cost you tens, even hundreds of thousands of dollars over the course of your lifetime, let alone the cost to your health and quality of life. Now Moths Phobia can be gone for less than the price of a round-trip airline ticket."
"... The expert phobia team at CTRN's Phobia Clinic is board-certified to help with Russophobia and a variety of related problems. The success rate of our 24 hour program is close to 100%"

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First case of human rabies in Chile caused by an insectivorous bat virus variant
From Emerging Infectious Diseases, 1/1/02 by Myriam Favi

The first human rabies case in Chile since 1972 occurred in March 1996 in a patient without history of known exposure. Antigenic and genetic characterization of the rabies isolate indicated that its reservoir was the insectivorous bat Tadarida brasiliensis. This is the first human rabies case caused by an insectivorous bat rabies virus variant reported in Latin America.

**********

In Latin America, rabies in bats was suspected during the 1910s in Brazil and was definitively diagnosed for the first time in Trinidad in 1931 (1,2). Since then, rabies has been diagnosed in numerous species of nonhematophagous bats throughout this region (3). Despite these early discoveries, the important role of nonhematophagous bats in the epidemiology of the disease remained overshadowed by the presence of canine and vampire bat rabies in the region (4). During the past decade, with the control of dog rabies in many urban areas and the incorporation of antigenic and molecular typing of viral variants into rabies surveillance programs, an appreciation for the importance of nonhematophagous bats in rabies epidemiology began to emerge in Latin America (5-9). Rabies virus has been isolated frequently from insectivorous and frugivorous bats in cities across Latin America (5,10-12). This situation also characterizes the current epidemiologic pattern of rabies in Chile, where dog rabies has been controlled. The last human rabies case in Chile caused by a dog bite occurred in 1972 (5); since 1985, insectivorous bats have been the main rabies reservoirs identified. As such, these bats are the most important source of infection for the sporadic rabies cases diagnosed in domestic animals every year (5). In 1996, after a period of 24 years with no known human rabies deaths, the first human rabies case with an insectivorous bat as the source of infection was reported in Chile (13).

Case Report

On February 13, 1996, a 7-year-old boy from Donihue in Administrative Region VI was admitted to the Hospital Clinico Fusat of Rancagua in the region (Figure 1) with a 2-day history of adynamia and dizziness. On admission, the child was calm, cooperative, and afebrile. Physical examination revealed anisocoria, ptosis of the left upper eyelid, and strabismus. There was no sensory loss, but ambulatory difficulties and abundant sialorrhea were observed. Brain computerized axial tomography (CAT) scan was normal. Polyradiculoneuritis was suspected, and gamma globulin was administered intravenously. The presumptive clinical diagnosis was encephalitis. On February 15, progressive paralysis developed that evolved to respiratory failure; the boy was connected to a mechanical ventilator. The patient could still follow simple orders. On February 18, he lapsed into a coma with severe hypotonia and total loss of reflexes. CAT scan showed diffuse cerebral edema, and the electroencephalogram indicated no electric activity. Intracranial hypertension developed, and the patient was put under hyperventilation and treated with intravenous dexamethasone, mannitol, and acyclovir.

[FIGURE 1 OMITTED]

Since a virus was considered the most probable cause, laboratory tests were conducted to determine the presence of the following viruses: herpes, measles, Coxsackie, echo, and polio. All results were negative. Interviews with relatives and the boyis nanny revealed that bats had been observed in the familyis house. The nanny also reported that she had seen a bat flying away from the childis toy box. Even though these interviews failed to reveal any direct contact with bats or any history of an animal bite, this epidemiologic information prompted the physicians to suspect rabies. On February 26, 1996, a serum sample and corneal smear were obtained from the patient and sent to the Rabies Laboratory of the Instituto de Salud P*blica de Santiago (ISP). A rabies antibody titer of 1:625 was found in the serum specimen by using the indirect fluorescent-antibody (IFA) technique (14). The patient had no history of rabies vaccination to account for the presence of antibodies. The corneal smear was negative for rabies antigen by the direct fluorescent-antibody (DFA) assay (15). On March 4, a second serum sample, cerebrospinal fluid, and saliva were obtained. The second serum sample was tested simultaneously with the first one by IFA assay, and a titer of 1:15,625 was detected. The cerebrospinal fluid showed a titer of 1:125. These findings confirmed the presumptive clinical diagnosis of rabies. The saliva sample was negative by DFA assay and suckling mouse inoculation (15,16).

The patient died on March 5, 1996, when artificial respiratory support was disconnected. Postmortem tissue samples of cerebral cortex, hippocampus, cerebellum, and nuchal skin biopsy were sent to the ISP Rabies Laboratory for diagnosis. The cerebellum and skin specimens were positive for rabies virus antigen by DFA assay.

Rabies postexposure prophylaxis with the suckling mouse brain Fuenzalida-Palacios vaccine was administered to the victimis mother and to 10 health-care providers who had possible contact with the patientis saliva. The rabies postexposure prophylaxis schedule used was 2 mL of vaccine, subcutaneously, on each of days 1, 2, 3, 4, 5, 6, 21, and 90. Blood samples were taken from vaccinees on day 14 after the initial dose of vaccine; IFA assay showed that adequate immune responses had developed.

The virus was isolated from the patientis brain tissue by intracerebral inoculation of suckling mice (16). To help identify the possible source of infection, the virus was antigenically and genetically characterized. Antigenic characterization of the virus was carried out by using a panel of eight monoclonal antibodies directed against the viral nucleoprotein, provided by the Centers for Disease Control and Prevention. The MAbs were used in an IFA assay as described (9,17). These analyses identified a rabies antigenic variant associated with Tadarida brasiliensis (free-tailed bat) in Chile, which had been designated as antigenic variant 4 (AgV4) (9,17).

Genetic characterization was done by sequencing a 320-bp portion of the rabies virus nucleoprotein gene from nucleotide position 1,157 to 1,476, as compared with the SADB 19 strain (18,19). Briefly, genomic viral RNA was extracted from infected tissue by using TRIzol (Invitrogen, San Diego, CA, formerly GIBCO-BRL Inc.) according to the manufactureris instructions. Complementary DNA was produced by a reverse transcription polymerase chain reaction with primers 10 g and 304 (19) and was sequenced by using the Taq Big Dye Termination Cycle Sequencing Ready Reaction Kit (Applied Biosystems, Foster City, CA), according to the manufactureris protocol, on an Applied Biosystems 377 DNA automated sequencer (Applied Biosystems).

This human rabies virus isolate was compared with viruses obtained from domestic animals and insectivorous bats in urban centers in Chile from 1977 to 1998 (18). PileUp and Pretty programs of the Wisconsin Package, Version 10 (Genetic Computer Group, 2000, Madison, WI), were used to produce sequence alignments and comparative nucleotide analyses. The programs DNADIST (Kimura-two parameter), NEIGHBOR (Neighbor-joining method), and DNAPARS (parsimony method) from the PHYLIP package, Version 3.5 (20), were used in the phylogenetic studies. The bootstrap method, as implemented by the SEQBOOT program from PHYLIP, was followed by the use of DNADIST and NEIGHBOR for the distance matrix analyses. SEQBOOT was also used before employing DNAPARS for the parsimony studies. Graphic representation of the trees was constructed with the TREEVIEW program (21).

Although five genetic variants of rabies virus are found in Chile (18) (Figure 2, groups A to E), a reservoir has been identified for only two: T. brasiliensis (Figure 2, group D) and Lasiurus sp. (Figure 2, group E). Phylogenetic analyses of the Chilean human isolate demonstrated that it segregated in group D. This group represents the genetic variant of rabies virus most frequently isolated throughout the country, formed by viruses from the Metropolitan Region and Regions IV, V, VI, VII, VIII, IX, and X (Figure 1). The high bootstrap value that supports the inclusion of this virus in group D and the very close genetic relationship it has with the other members of this group (average genetic distance 0.5%) clearly show that T. brasiliensis is the likely reservoir of the rabies virus isolated in this case.

[FIGURE 2 OMITTED]

Conclusions

The absence of a history of an animal bite, the clinical presentation of the disease without the classic signs of hydrophobia or aerophobia, and the absence of any human rabies cases for a period of 24 years in Chile were the primary reasons that rabies was not first suspected and a definitive diagnosis was delayed in this case. Retrospective studies of human rabies epidemiology have demonstrated that it is not uncommon to observe rabies cases in which there is no history of a bite, mainly in situations involving insectivorous bat rabies variants. For example, of the 17 human rabies cases associated with insectivorous bats reported in the United States from 1980 to 1996, only one had clear documentation of a bite (22). Without proper education, patients may not be aware of the risks from a bat bite. Moreover, the wound may not be appreciated as a concern because of the limited injury inflicted by the bat's small teeth (23). Finally, there may not be an opportunity to obtain a history from a pediatric patient or to discern an exposure that occurs during sleep or other circumstances (24).

In cases in which a patient shows clinical signs of central nervous system involvement of unknown or suspected viral origin, health-care providers should be aware of the importance of conducting a thorough medical history to appropriately assess the possibility of rabies. With the important changes in the epidemiologic patterns of rabies in Latin America, this disease should be included in the differential diagnosis of neurologic diseases characterized by acute encephalitis and progressive paralysis, even when no previous history of an animal bite exists and even in regions where canine rabies has been eradicated.

Acknowledgments

We thank Charles E. Rupprecht and staff of the Rabies Section, Viral and Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention for their collaboration, advice, and valuable discussions.

Dr. Favi is the head of the Rabies Laboratory of the Instituto de Salud Publica de Chile. Her research interests include rabies diagnosis and the study of the molecular epidemiology of rabies in Chile and other Latin American countries.

References

(1.) Carini A. Sur une grande Epizootie de rage. Annales de L'Institut Pasteur (Paris) 1911;25:843-6.

(2.) Pawan JL. The transmission of rabies in Trinidad by the vampire bat. Ann Trop Med Parasitol 1936;30:101-30.

(3.) Baer GM, Smith JS. Rabies in nonhematophagous bats. In: Baer GM, editor. The natural history of rabies. 2nd ed. Boca Raton (FL): CRC Press; 1991. p. 341-66.

(4.) Acha PN, Arambulo PV III. Rabies in the tropics, history and current status. In: Kuwert E, Merieux C, Koprowski H, Bogel K, editors. Rabies in the Tropics. Berlin: Springer-Verlag; 1985. p. 343-59.

(5.) Favi M, Catalan R. Rabia en murcielagos en Chile. Avances en Ciencias Veterinarias 1986; 1:73-6.

(6.) Favi M, Duran JC. Epidemiologia de la rabia en Chile (1929-1988). Avances en Ciencias Veterinarias 1991;6:13-21.

(7.) de Mattos CA, de Mattos CC, Smith JS, Miller ET, Papo S, Utrera A, et al. Genetic characterization of rabies field isolates from Venezuela. J Clin Microbiol 1996;34:1553-8.

(8.) Smith JS. Rabies virus epitopic variation use in ecologic studies. Adv Virus Res 1989;36:215-53.

(9.) Favi M, Yung V, Pavletic C, Ramirez E, de Mattos CC, de Mattos CA. Rol de los murcielagos insectivoros en la transmision de la rabia en Chile. Archivos de Medicina Veterinaria 1999;31:157-65.

(10.) Delpietro HA, Gury-Dhomen F, Larghi OP, Mena-Segura C, Abramo L. Monoclonal antibody characterization of rabies virus strains isolated in the River Plate Basin. J Vet Med 1997;B44:477-83.

(11.) Uieda W, Harmani NMS, Silva MMS. Raiva em morcegos insetivoros (Molossidae) do Sudeste do Brasil. Rev Saude Publica 1995;29:393-7.

(12.) Loza-Rubio E, de Mattos CC, Aguilar-Setien A, de Mattos CA. Aislamiento y caracterizacion molecular de un virus rabico obtenido de un murcielago no hematofago en la Ciudad de Mexico. Veterinaria Mexico 2000;31:147-52.

(13.) Vigilancia epidemiologica de la rabia en las Americas 1996. Boletin de Vigilancia Epidemiologica de las Americas Volume 28. Buenos Aires: Instituto Panamericano de Proteccion de Alimentos y Zoonosis/Organizacion Panamericena de la Salud/Organizacion Mundial de la Salud; 1996.

(14.) Leffingwell L, Irons JV. Rabies antibodies in human serums titrated by the indirect FA method. Public Health Rep 1965;80:999-1004.

(15.) Dean DJ, Abelseth MK, Atanasiu P. The fluorescent antibody test. In: Meslin F-X, Kaplan MM, Koprowski H, editors. Laboratory techniques in rabies. 4th ed. Geneva: World Health Organization; 1996. p. 88-95.

(16.) Koprowski H. Prueba de inoculacion en raton. In: Kaplan MN, Koprowski H, editors. La rabia, tecnicas de laboratorio. 3rd ed. Ginebra (Suiza): Organizacion Mundial de la Salud; 1976. p. 88-97.

(17.) Diaz AM, Papo S, Rodriguez A, Smith JS. Antigenic analysis of rabies virus isolates from Latin America and the Caribbean. Zentralbl Veterinarmed [B] 1994;41:153-60.

(18.) de Mattos CA, Favi M, Yung V, Pavletic C, de Mattos CC. Bat rabies in urban centers in Chile. J Wildl Dis 2000;36:231-40.

(19.) Smith JS. Rabies virus. In: Murray PR, Baron EJ, Pfaller MA, Tenover FC, Yolken R, editors. Manual of clinical microbiology. Washington: American Society for Microbiology Press; 1995. p. 997-1003.

(20.) PHYLIP Inference Package [Computer program]. Version 3.5c. Seattle (WA): University of Washington; 1993.

(21.) Page RAM. TREEVIEW: an application to display phylogenetic trees on personal computers. Comput Appl Biosci 1996;12:357-8.

(22.) Noah DL, Drenzek CL, Smith JS, Krebs JW, Orciari LA, Shaddock J, et al. Epidemiology of human rabies in the United States, 1980 to 1996. Ann Intern Med 1998;128:922-30.

(23.) Centers for Disease Control and Prevention. Human rabies-- California, Georgia, Minnesota, New York, and Wisconsin, 2000. MMWR Morb Mortal Wkly Rep 2000;49:1111-5.

(24.) Pape W J, Fitzsimmons TD, Hoffman RE. Risk for rabies transmission from encounters with bats, Colorado, 1977-1996. Emerg Infect Dis 1999;5:433-7.

Myriam Favi, * Carlos A. de Mattos, Veronica Yung, Evelyn Chala, ([double dagger]) Luis R. Lopez, ([double dagger]) and Cecilia C. de Mattos ([dagger])

* Instituto de Salud Publica, Ministerio de Salud Publica, Santiago, Chile; ([dagger]) Centers for Disease Control and Prevention, Atlanta, Georgia, USA; and ([double dagger]) Hospital Clinico Fusat of Rancagua, Rancagua, Chile

Address for correspondence: Carlos A. de Mattos, Rabies Section, Viral and Rickettsial Zoonosis Branch, Division of Viral and Rickettsial Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road, Mailstop G33, Atlanta, GA 30333, USA; fax: 404-639-1058; e-mail: cdd9@cdc.gov

COPYRIGHT 2002 U.S. National Center for Infectious Diseases
COPYRIGHT 2002 Gale Group

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