Isospora (Cystoisospora) belli diarrhea can sometimes be fulminant in immunocompromised patients. It is endemic in tropical and subtropical areas, and sporadic episodes have been reported in nonendemic areas in nursing homes, day-care centers, and psychiatric institutions. We describe isosporiasis in an HIV-negative Sudanese-American female who presented with a debilitating diarrheal illness an...

BACKGROUND Pneumocystis jiroveci (formerly Pneumocystis carinii) pneumonia (PCP) is a major cause of mortality in human immunodeficiency virus (HIV)-infected infants in Africa, but the prevalence of mutations in the gene encoding dihydropteroate synthase (DHPS) in isolates from Africa has not been reported. METHODS This study investigated the prevalence of DHPS mutations in P. jiroveci isolat...

PURPOSE This study compared the cutting area, instrumentation time, root canal anatomy preservation and non-instrumented areas obtained by F360(®), Mtwo(®), RaCe(®) and Hyflex(®) files with ISO size 35. MATERIAL AND METHODS 120 teeth with a single straight root and root canal were divided into 4 groups. Working length was calculated by using X-rays. The teeth were sectioned with a handpiece a...

TO THE EDITOR—Pneumocystis jirovecii is responsible for severe inflammatory pneumonia in transplant recipients [1–6]. We encountered a cluster of fulminant P. jirovecii pneumonia (PJP) in 14 transplant recipients occurring a mean of 6.3 years (SD, 5.3 years) after transplant, beyond our 6-month trimethoprimsulfamethoxazole (TMP-SMZ) prophylaxis period [4]. Additional clusters emerged in 7 other...

Mycetoma is a chronic, progressive, and destructive disease primarily caused by actinomycetes. This is a report of 4 cases of actinomycotic mycetomas studied in our hospital during the last five years. The patients included 2 men, 56 and 42 years old, and 2 women, 31 and 52 years old, from Khuzestan province located in the south west of Iran. Clinically all patients presented with mycetoma synd...

In this paper, the performance of an ultra-fast all-optical symmetric Mach Zehnder (SMZ) interferometer employed as a demultiplexer and/or a switch in an OTDM network is investigated by means of controlling the power of the control pulses. Employing control signals with optimum unequal powers results in reduced residual crosstalk, thus leading to improved bit error rate (BER) performance and re...

Riparian areas are critical interfaces between aquatic and terrestrial ecosystems. Protecting and enhancing them by implementing streamside management zones (SMZs) is an essential practice of sustainable forestry. SMZs provide ecological functions including protection against non-point source pollution, promotion of water infiltration, contribution of beneficial nutrients and coarse woody debri...

NOTE. PR, present report; TMP-SMZ, trimethoprim-sulfamethoxazole. in Missouri and other areas where the disease is not endemic needs review. The national Lyme disease surveillance case definition was developed nearly 10 years ago [3], and a great amount of relevant new scientific evidence regarding Lyme disease and southern tick–associated rash illness has accumulated since that time. The findi...

In this paper we report the simulation results of simultaneous all optical clock extraction and demultiplexing from 4x10 GHz asynchronous optical time division multiplexed (OTDM) packet signals using a single symmetric Mach-Zehnder (SMZ) switch. In highspeed OTDM systems clock recovery, the address recognition and the payload routing are all should be carried out in the optical domain in order ...