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Epidemiology of common cold.

The epidemiology of common cold and the role of some predisposing factors were studied by examining 2065 healthy children, aged 2.5-6 years. The examination included a questionnaire, completed by the parents, a general physical examination, a clinical E.N.T.-examination and various technical investigations. The mean annual incidence of common cold was 2.43 (as was reported by the parents) and 5 when taking into consideration the time span between the last episode of common cold and the date of examination. Mucoid and purulent rhinitis were less frequently found in older children. A positive history of upper respiratory tract infections in the parents showed to be the most important risk factor for the occurrence of infectious rhinitis in the children. The higher the weight of the child, the lower the incidence of common cold and the fewer pathological rhinoscopical findings. Children with a head circumference below the 2.5 percentile had the highest incidence of infectious rhinitis. Humid housing conditions showed to be connected with a higher incidence of infectious rhinitis. Children of parents with a higher profession had more rhinitis than children of labourers. Smoking habits of the parents had only little effect on the rhinological status of children.

Age Factors↗

Regular sauna bathing and the incidence of common colds.

The high morbidity of common colds means that their economic importance is considerable, with colds causing more loss of productivity than any other infection. As no effective prophylaxis is available, this trial was to test the hypothesis that sauna bathing can reduce the incidence of common colds. Twenty-five volunteers were submitted to sauna bathing, with 25 controls abstaining from this or comparable procedures. In both groups the frequency, duration and severity of common colds were recorded for six months. There were significantly fewer episodes of common cold in the sauna group. This was found particularly during the last three months of the study period when the incidence was roughly halved compared to controls. The mean duration and average severity of common colds did not differ significantly between the groups. It is concluded that regular sauna bathing probably reduces the incidence of common colds, but further studies are needed to prove this.

Adult↗

A review on recent development of common cold therapeutic agents.

(1) The common cold is a frequently occurring illness caused by rhinoviruses. Inspite of its ubiquitous occurrence the disease has defied all efforts of finding a cure. The current approaches to the treatment of common cold can be divided into two important categories: the antiviral and antiinflammatory; both of these leave a lot to be desired. Most of the rhinovirus serotypes use a single cellular receptor, i.e. the intercellular Adhesion Molecule-1 (ICAM-1) for attachment to the cells. This has lead to the development of blockers of this receptor in an effort to find a cure for the common cold. (2) Recently tremacarmra, a synthetic ICAM-1 glycoprotein has been investigated in human volunteers as an antiadhesion molecule towards an approach to common cold therapy. Two dosage forms of the compound-phosphate buffered saline spray and carboxymethyl cellulose-mannitol powder spray were administered intra-nasally in two modes--pre-inoculation (7 h prior) and post-inoculation (24 h after) time periods of rhinovirus type 39 challenge to different groups of human volunteers. Both the treatment modes produced a significant decrease in the symptoms score of clinical illness and concentration of interleukin-8 in the nasal lavage. Saline spray was found to be devoid of any side effects, whereas powder spray produced some nasal irritation initially. The encouraging results of clinical trial with tremacamra show that a cure for common cold is not far off. However, it remains to be seen what would be the impact of such synthetic protein administration on the immune response of the body, should such compounds be used repeatedly. Further, since all colds are not due to rhinovirus it would be wise to restrict the use of tremacamra during autumn and spring when rhinoviruses are known to be the causative organisms of common cold.

Antiviral Agents↗

Population-based case-control study of the common cold during pregnancy and congenital abnormalities.

The common cold is the most frequent maternal disease during pregnancy. The possible association between different congenital abnormalities and the common cold in pregnant women was evaluated in the data set of the Hungarian Case-Control Surveillance of Congenital Abnormalities between 1980 and 1996. Of 22,843 cases with congenital abnormalities, 3,827 (16.8%) had mothers with the common cold, while of 38,151 population controls without congenital abnormalities, 5,475 (14.4%) (adjusted prevalence odds ratio: POR: 1.26 with 95% CI: 1.20-1.32). Of 834 malformed controls with Down syndrome, 114 (17.3%) had mothers with the common cold (POR: 0.96 with 95% CI: 0.80-1.16). Nearly half of mothers with the common cold had secondary complications with antifever therapy. The comparison of cases with 25 congenital abnormalities and population control mothers with medically recorded common cold during the second and third months of gestation showed that five congenital abnormality groups: congenital hydrocephaly (3.6, 1.3-9.7), cleft lip+/-palate (2.3, 1.5-3.6), posterior cleft palate (2.3, 1.2-4.1), limb deficiencies (2.2, 1.1-4.1) and multiple CAs (2.0, 1.4-2.9) had adjusted POR 2 or more. The comparison of cases with different congenital abnormalities and malformed controls (including offspring with Down syndrome) as referent, indicated a higher prevalence of the common cold during the second and third month of gestation only in the mothers of cases with cleft lip+/-palate (adjusted POR: 1.7 with 95% CI: 1.2-2.5), however, congenital hydrocephaly, neural-tube defects and multiple CAs had also mothers with a somewhat higher occurrence of the common cold. The possible association between the common cold during early pregnancy and the above mentioned congenital abnormalities may be connected mainly with the indirect effect of secondary complications of maternal common cold, particularly high fever because antifever drugs were able to prevent the possible teratogenic effect of the common cold.

Analgesics, Non-Narcotic↗

Acute cooling of the feet and the onset of common cold symptoms.

BACKGROUND: There is a common folklore that chilling of the body surface causes the development of common cold symptoms, but previous clinical research has failed to demonstrate any effect of cold exposure on susceptibility to infection with common cold viruses. OBJECTIVE: This study will test the hypothesis that acute cooling of the feet causes the onset of common cold symptoms. METHODS: 180 healthy subjects were randomized to receive either a foot chill or control procedure. All subjects were asked to score common cold symptoms, before and immediately after the procedures, and twice a day for 4/5 days. RESULTS: 13/90 subjects who were chilled reported they were suffering from a cold in the 4/5 days after the procedure compared to 5/90 control subjects (P=0.047). There was no evidence that chilling caused any acute change in symptom scores (P=0.62). Mean total symptom score for days 1-4 following chilling was 5.16 (+/-5.63 s.d. n=87) compared to a score of 2.89 (+/-3.39 s.d. n=88) in the control group (P=0.013). The subjects who reported that they developed a cold (n=18) reported that they suffered from significantly more colds each year (P=0.007) compared to those subjects who did not develop a cold (n=162). CONCLUSION: Acute chilling of the feet causes the onset of common cold symptoms in around 10% of subjects who are chilled. Further studies are needed to determine the relationship of symptom generation to any respiratory infection.

Adolescent↗

Use of 0.06% ipratropium bromide nasal spray in children aged 2 to 5 years with rhinorrhea due to a common cold or allergies.

BACKGROUND: Rhinorrhea from common colds or allergies in children is similar to that in adults, yet there are few data on the use of ipratropium bromide nasal spray in children younger than 5 years. OBJECTIVE: To evaluate the safety and efficacy of 0.06% ipratropium bromide nasal spray in 2- to 5-year-old children with rhinorrhea from a common cold or allergies. METHODS: A total of 230 children (43 with common colds and 187 with allergies) participated in an open-label, multicenter study. Patients with a common cold received ipratropium bromide nasal spray (84 microg per nostril) 3 times daily for 4 days; those with allergies received ipratropium bromide nasal spray (42 microg per nostril) 3 times daily for 14 days. RESULTS: In the common cold and allergy groups, 91% and 90% of the parents, respectively, found that ipratropium bromide was either "very useful" or "somewhat useful." Furthermore, 67% and 91% of parents in the common cold and allergy groups, respectively, found that administration of a nasal spray was either "extremely easy" or "very easy." Symptom scores were improved from baseline in both groups. The nasal spray was well tolerated and was not associated with serious or systemic anticholinergic adverse effects. Most adverse events were infrequent and mild to moderate, and study discontinuation due to an adverse event occurred in less than 3% of patients. CONCLUSIONS: The 0.06% ipratropium bromide nasal spray, 42 or 84 microg per nostril 3 times daily, is easy to administer, safe, and effective for the control of rhinorrhea in children aged 2 to 5 years with a common cold or allergies.

Administration, Intranasal↗