Recovery of olfactory and gustatory dysfunctions in coronavirus disease 2019 patients: a prospective cohort study.

OBJECTIVE: This study aimed to determine the association of some demographic and clinical factors with recovery from olfactory and gustatory dysfunction in coronavirus disease 2019 patients in Iran. METHODS: This prospective cohort study was performed on 242 coronavirus disease 2019 patients with olfactory and gustatory dysfunction. The time from onset to recovery for olfactory and gustatory dysfunction was estimated by the Kaplan-Meier estimator. RESULTS: After six months, 239 patients (98.8 per cent) had completely recovered from olfactory dysfunction. Olfactory and gustatory dysfunction symptoms resolved in 80.99 per cent and 83.56 per cent of the patients, respectively, within the first 30 days of symptom onset. Mean recovery time for olfactory dysfunction (35.07 ± 4.25 days) was significantly longer in those infected during the first epidemic wave compared with those infected during the second wave (21.65 ± 2.05 days) (p = 0.004). A similar pattern in recovery time was observed for cases of gustatory dysfunction (p = 0.005). CONCLUSION: The recovery rate for coronavirus disease 2019 related olfactory and gustatory dysfunction is high within the first month of symptom onset.

Maternal serum zinc deficiency in cases of neural tube defect in Gorgan, north Islamic Republic of Iran.

Previous studies have shown a high rate of neural tube defects (NTD) in Gorgan, northern (tub efcs (NTD) in Gorgan, northern Islamic Republic of Iran. This case-control study during 2003-04 compared serum zinc levels and other variables in 23 mothers of neonates affected with NTD and 36 mothers with normal healthy neonates in Dezyani hospital in Gorgan. Mean serum zinc levels in the case and control groups were 13.43 micromol/L (SD 6.3) and 11.41 micromol/L (SD 6.3) respectively. Zinc deficiency was found in 13 (36.5%) of the cases and 7 (19.4%) of the controls. Logistic regression analysis showed an association between the presence of NTD and zinc deficiency (OR 5.06; 95% CI: 1.51-16.94).

Maternal serum zinc deficiency in cases of neural tube defect in Gorgan, north Islamic Republic of Iran

Previous studies have shown a high rate of neural tube defects [NTD] in Gorgan, northern Islamic Republic of Iran. This case-control study during 2003-04 compared serum zinc levels and other variables in 23 mothers of neonates affected with NTD and 36 mothers with normal healthy neonates in Dezyani hospital in Gorgan. Mean serum zinc levels in the case and control groups were 13.43 micromol/L [SD 6.3] and 11.41 micromol/L [SD 6.3] respectively. Zinc deficiency was found in 13 [36.5%] of the cases and 7 [19.4%] of the controls. Logistic regression analysis showed an association between the presence of NTD and zinc deficiency [OR 5.06; 95% CI: 1.51-16.94]

Epidemiology of neural tube defects in northern Iran, 1998-2003.

We determined the rates of neural tube defects at a referral hospital in Gorgan, north Islamic Republic of Iran, and the relations of these abnormalities to sex, maternal ethnicity, maternal age and season. During 1998-2003, there were 109 cases among 37 951 births, a prevalence of 28.7 per 10000 (24.8 and 32.8 per 10 000 among males and females respectively). The rates in Turkmen, native Fars and Sistani ethnic groups were 40.5, 25.2 and 30.8 per 10 000 respectively. The rates of spina bifida and anencephaly were 16.3 and 11.3 per 10 000 respectively. The rate of affected newborns was highest in mothers aged over 35 years (50.7 per 10 000). The peak prevalence was in December.

Epidemiology of neural tube defects in northern Iran, 1998-2003

We determined the rates of neural tube defects at a referral hospital in Gorgan, north Islamic Republic of Iran, and the relations of these abnormalities to sex, maternal ethnicity, maternal age and season. During 1998-2003, there were 109 cases among 37 951 births, a prevalence of 28.7 per 10 000 [24.8 and 32.8 per 10 000 among males and females respectively]. The rates in Turkmen, native Fars and Sistani ethnic groups were 40.5, 25.2 and 30.8 per 10 000 respectively. The rates of spina bifida and anencephaly were 16.3 and 11.3 per 10 000 respectively. The rate of affected newborns was highest in mothers aged over 35 years [50.7 per 10 000]. The peak prevalence was in December

Congenital malformations at a referral hospital in Gorgan, Islamic Republic of Iran.

This study recorded the rate of congenital malformations in 10000 births at a referral hospital in Gorgan, Islamic Republic of Iran in 1998-99. The overall incidence of congenital malformations was 1.01% (1.19% in males and 0.76% in females). Anomalies of the musculoskeletal system had the highest incidence (0.38%), followed by central nervous system (0.28%) and genitourinary system (0.25%). The incidence of congenital malformations in different ethnic groups was 0.85%, 1.45% and 1.70% in native Fars, Turkman and Sistani groups respectively. Sex and ethnic background are factors in the rate of congenital malformations in this area.

Congenital malformations at a referral hospital in Gorgan, Islamic Republic of Iran

This study recorded the rate of congenital malformations in 10000 births at a referral hospital in Gorgan, Islamic Republic of Iran in 1998-99. The overall incidence of congenital malformations was 1.01% [1.19% in males and 0.76% in females]. Anomalies of the musculoskeletal system had the highest incidence [0.38%], followed by central nervous system [0.28%] and genitourinary system [0.25%]. The incidence of congenital malformations in different ethnic groups was 0.85%, 1.45% and 1.70% in native Fars, Turkman and Sistani groups respectively. Sex and ethnic background are factors in the rate of congenital malformations in this area

Group a streptococcal serotypes isolated from healthy schoolchildren in iran.

Serotypes of group A streptococci are still a major cause of pharyngitis and some post-infectious sequelae such as rheumatic fever. As part of the worldwide effort to clarify the epidemiological pattern of group A streptococci in different countries, the present study was conducted to assess the prevalence of Streptococcus pyogenes serotypes in Iran. A total of 1588 throat swabs were taken from healthy school children in the city of Gorgan during February and March 1999. Of those isolates, 175 resulted positive for group A streptococci. The distribution pattern was similar for girls and boys, with 10.8% and 11.2%, respectively. Urban school children showed a higher rate of colonization compared to those in rural areas. Serotyping was performed on 65 of the positive isolates using standard techniques, and only 21 (32%) were M-type isolates. Their profiles fell into four types with M1 predominating, which could reflect the presence of rheumatic fever in the region. However, when isolates were challenged for T-antigen types, nearly all were positive (94%). The pattern of T types was diverse (18 types), with the most common T types being T1 (26%), TB3264 (15%), TB\1-19 & B\25\1-19 (9.2%) and T2 & 2\28 (7.7%). When isolates were tested for opacity factor, only 23 (35%) were positive while 34 (52%) responded to the serum opacity reaction test. Although the number of isolates in this study was not sufficient to make any epidemiological conclusions, the scarcity of serotyping studies in Iran could render these data useful for future attempts to develop a streptococcal vaccine.