Incubation period and serial interval of Covid-19 in a chain of infections in Bahia Blanca (Argentina).

The objective of this work was to estimate the incubation period and the serial interval of Covid-19 from a sample of symptomatic patients in Bahia Blanca city during the period March-May 2020. We collected dates of illness onset for primary cases and secondary cases for the first 18 secondary patients infected with SARS-Cov-2. Estimations of incubation period are based on a log-normal distribution while we assume a Gamma distribution for the serial interval.

Student's perception of school bullying and its impact on academic performance: A longitudinal look.

Introduction: Bullying among peers has immediate and long-term consequences, as it affects children's health-related quality of life. The aim was to examine the association between the frequency, type and dynamics of children's involvement in bullying situations and their academic performance over the school year.

Methods: Longitudinal study conducted in 2015 in 9 to 12 year-olds in schools of Bahía Blanca, Argentina.

Bullying at school: Agreement between caregivers' and children's perception.

Introduction: Bullying at school is usually kept secret from adults, making them unaware of the situation.

Objective: To describe caregivers' and children's perception and assess their agreement in terms of bullying situations.

Methods: Cross-sectional study in children aged 8-12 years old attending public schools and their caregivers.

Health-related quality of life in children with and without chronic conditions: A multicenter study.

Introduction: Chronic conditions (CCs) in the early stages of life may have an impact on various dimensions of health-related quality of life (HRQoL) in children.

Objective: To compare HRQoL in children with confirmed CCs, reported CCs, and without CC.

Population And Method: Cross-sectional study conducted in 2012 in the context of a larger research study carried out at schools in Córdoba and Bahía Blanca, and at Hospital Italiano of Buenos Aires and Hospital Prof.

Nested polymerase chain reaction for detection of pathogenic leptospires.

Leptospirosis is a widespread zoonosis caused by pathogenic members of the genus Leptospira that has a great impact on human and veterinary public health. Early diagnosis of leptospirosis is important because severe lepto spiral infection can have a fulminant course. The available serological techniques for the diagnosis of leptospirosis have low sensitivity during the early stage of the disease.

[Evidence of dog as a reservoir for human leptospirosis: a serovar isolation, molecular characterization and its use in a serological survey].

Canine leptospirosis has been known as Stuttgart disease since 1898, and dogs are considered to be the second principal source of infection in man. The isolation of a pathogenic serovar from dog urine that was diagnosed clinically and laboratorial as having leptospirosis and its utilization to test serological samples of human and canine cases of leptospirosis, has demonstrated its importance to the ecosystem of the southern region of Brazil. The results of the serological microscopic agglutination test indicated that 100% of human serum samples from 12 patients from the serum bank of 2001 at the Center for Control of Zoonoses, that had titers between 25 and 3,200 with the canicola serovar, and 72% of 105 canine serum samples from the same serum bank, also reacted with the new isolate.

Investigation of fluoroquinolone-induced myalgia using (31)P magnetic resonance spectroscopy and in vitro contracture tests.

Objective: To investigate muscle function in patients with severe myalgia resulting from fluoroquinolone (FQ) treatment. We used histology, in vitro contracture tests (IVCTs), and (31)P magnetic resonance spectroscopy ((31)P MRS) to explore muscle contraction and metabolism.

Methods: We studied 3 patients with myalgia, hyperalgia tendinopathy, and arthralgia following FQ treatment and 3 normal subjects after taking FQs.

[Lead poisoning in adults. Experience of the Poison Control Center of Marseille from 1993 to 2000].

Objective: Report the experience of the Marseille's anti-poison center with lead poisoning adults.

Patients And Methods: Between 1993 and 2000, 45 adults patients consulted the poison Centre of Marseille for a history of lead exposure (9 women, 36 men, average age 44 YO, between 22 an 76 YO). The lead sources were mostly occupational (welding, heavy metal industries.

Malignant hyperthermia susceptibility revealed by myalgia and rhabdomyolysis during fluoroquinolone treatment.

Fluoroquinolones cause myalgia, but this complication is not clearly documented. We describe a patient who developed myalgia and rhabdomyolysis during fluoroquinolone treatment. The patient was a 33-year-old man treated with norfloxacin for common cystitis.

Cannabis arteritis revisited--ten new case reports.

The purpose of this paper was to revisit the old concept of cannabis arteritis first described in the 1960s and report 10 new cases. Ten male patients, with a median age of 23.7 years developed subacute distal ischemia of lower or upper limbs, leading to necrosis in the toes and/or fingers and sometimes to distal limb gangrene.

[Severe potassium dichromate poisoning after accidental nasal introduction].

Background: Nasal foreign body (NFB) is a common situation in pediatrics. Poisoning is a rare complication of NFB insertion. We report a case of acute potassium dichromate poisoning secondary to NFB insertion.

[Methamidophos intoxication: immediate and late neurological toxicity; two case reports].

Méthamidophos is an organophosphorus insecticide which delayed neurotoxicity is more frequent than with other organophosphates. Authors present a case report concerning a collective poisoning after cutaneous contact: two farm labourers presented moderate cholinergic signs quickly followed by proximal neurological signs (retrobulbar ocular neuritis for one patient, thight paresthesias for the second one). These signs decreased meanwhile new neurological symptoms appeared: sensory and motor peripheral neuropathy in both patients, with a clinical aspect of OrganoPhosphorus Induced Delayed Neuropathy (OPIDN).

[Impact of delta-9-tetrahydrocannabinol and its metabolites on the immune system].

Many studies obvious impact of cannabinoids on the immune system. These studies follow the rapid advanced researches led in the immunology field. D9 Tetrahydrocannabinol and their metabolites decrease production of tumoral necrosis factor alpha.

[Cannabis-induced arteritis vs. Léo Buerger disease. Nosologic discussion apropos of two new cases].

Background: We observed two cases of juvenile endarteritis which might suggest a possible link between Winiwarter-Buerger disease and cannabis-induced endarteritis.

Case Reports: Our two patients were young men aged 18 and 20 years. Both developed acute distal ischemia of the lower or upper limbs with arteriographic evidence suggestive of Winiwarter-Buerger disease.

[Study of narcotics and buprenorphine prescriptions in the Provence-Alps-Côte d'Azur region].

Following the setting up by the Government of their project for the management of drug addicts, and under the guidance of the CEIP (Centre d'Evaluation et d'Information sur les Pharmacodépendances [Centre for Evaluation and Information on Drug Addiction]) in Marseille, a survey of prescriptions written on controlled-drug prescription pads was performed. The aims were threefold: to study the medicines prescribed, to follow up the legislation and to inform doctors and pharmacists. Copies of the prescriptions, dated between 1 January 1996 and 30 June 1996, which were sent by 81 per cent of the 216 pharmacies contacted in 15 towns in the Provence-Alpes-Côte d'Azur (PACA) region were studied.

[Snake bite by European vipers. A multicenter study of tolerance to Viperfav, a new intravenous antivenom].

Objectives: To evaluate the tolerance and the effectiveness of i.v. Viperfav, a new antivenom containing F(ab')2 fragments of equine antibodies, for the treatment of European viper envenomed patients.

[Acute renal insufficiency caused by Amanita proxima poisoning: experience of the Poison Center of Marseille].

In southern France, some Amanita species are usually eaten like Amanita ovoidea (Quélet, 1872) which is a common white mushroom. In same areas, a similar and less common fungus can be encountered: Amanita proxima (Dumee, 1916). The first published cases of Amanita proxima poisonings with acute renal failure have been reported in 1994 by a medical team from Montpellier.